The drm_ioctl function in drivers/gpu/drm/drm_drv.c in the Direct Rendering Manager (DRM) subsystem in the Linux kernel before 2.6.27.53, 2.6.32.x before 2.6.32.21, 2.6.34.x before 2.6.34.6, and 2.6.35.x before 2.6.35.4 allows local users to obtain potentially sensitive information from kernel memory by requesting a large memory-allocation amount.

The openSUSE 11.3 kernel was updated to versiuon 2.6.34.7. It fixes lots of bugs and security issues.

A major regression in handling some USB Input devices (Mice and Keyboard) introduced by the previous update was fixed.

Fixed lots of bugs in the ATH5K wireless driver.

Following security issues were fixed: CVE-2010-3078: A XFS stack memory information disclosure was fixed.

CVE-2010-2954: A NULL pointer dereference in the IRDA stack was fixed, which could lead to kernel crashes.

CVE-2010-2959: A privilege escalation possibility in the CAN bus protocol module can_bcm was fixed.

CVE-2010-2942: Several memory leaks in the net scheduling code were fixed.

CVE-2010-2803: Fixed kernel memory information leaks from DRM ioctls.

This update fixes the following security issues :

  - Missing sanity checks in the Intel i915 driver in the     Linux kernel could allow a local, unprivileged user to     escalate their privileges. (CVE-2010-2962, Important)

  - compat_alloc_user_space() in the Linux kernel 32/64-bit     compatibility layer implementation was missing sanity     checks. This function could be abused in other areas of     the Linux kernel if its length argument can be     controlled from user-space. On 64-bit systems, a local,     unprivileged user could use this flaw to escalate their     privileges. (CVE-2010-3081, Important)

  - A buffer overflow flaw in niu_get_ethtool_tcam_all() in     the niu Ethernet driver in the Linux kernel, could allow     a local user to cause a denial of service or escalate     their privileges. (CVE-2010-3084, Important)

  - A flaw in the IA32 system call emulation provided in     64-bit Linux kernels could allow a local user to     escalate their privileges. (CVE-2010-3301, Important)

  - A flaw in sctp_packet_config() in the Linux kernel's     Stream Control Transmission Protocol (SCTP)     implementation could allow a remote attacker to cause a     denial of service. (CVE-2010-3432, Important)

  - A missing integer overflow check in snd_ctl_new() in the     Linux kernel's sound subsystem could allow a local,     unprivileged user on a 32-bit system to cause a denial     of service or escalate their privileges. (CVE-2010-3442,     Important)

  - A flaw was found in sctp_auth_asoc_get_hmac() in the     Linux kernel's SCTP implementation. When iterating     through the hmac_ids array, it did not reset the last id     element if it was out of range. This could allow a     remote attacker to cause a denial of service.
    (CVE-2010-3705, Important)

  - A function in the Linux kernel's Reliable Datagram     Sockets (RDS) protocol implementation was missing sanity     checks, which could allow a local, unprivileged user to     escalate their privileges. (CVE-2010-3904, Important)

  - A flaw in drm_ioctl() in the Linux kernel's Direct     Rendering Manager (DRM) implementation could allow a     local, unprivileged user to cause an information leak.
    (CVE-2010-2803, Moderate)

  - It was found that wireless drivers might not always     clear allocated buffers when handling a driver-specific     IOCTL information request. A local user could trigger     this flaw to cause an information leak. (CVE-2010-2955,     Moderate)

  - A NULL pointer dereference flaw in ftrace_regex_lseek()     in the Linux kernel's ftrace implementation could allow     a local, unprivileged user to cause a denial of service.
    Note: The debugfs file system must be mounted locally to     exploit this issue. It is not mounted by default.
    (CVE-2010-3079, Moderate)

  - A flaw in the Linux kernel's packet writing driver could     be triggered via the PKT_CTRL_CMD_STATUS IOCTL request,     possibly allowing a local, unprivileged user with access     to '/dev/pktcdvd/control' to cause an information leak.
    Note: By default, only users in the cdrom group have     access to '/dev/pktcdvd/control'. (CVE-2010-3437,     Moderate)

  - A flaw was found in the way KVM (Kernel-based Virtual     Machine) handled the reloading of fs and gs segment     registers when they had invalid selectors. A privileged     host user with access to '/dev/kvm' could use this flaw     to crash the host. (CVE-2010-3698, Moderate)

This update also fixes several bugs.

The system must be rebooted for this update to take effect.

This security update of the SUSE Linux Enterprise 11 GA kernel updates the kernel to 2.6.27.54 and fixes various security issues and other bugs.

Following security issues were fixed: CVE-2010-3310: Multiple integer signedness errors in net/rose/af_rose.c in the Linux kernel allowed local users to cause a denial of service (heap memory corruption) or possibly have unspecified other impact via a rose_getname function call, related to the rose_bind and rose_connect functions.

CVE-2010-2955: A kernel information leak via the WEXT ioctl was fixed.

CVE-2010-3080: A double free in an alsa error path was fixed, which could lead to kernel crashes.

CVE-2010-3078: Fixed a kernel information leak in the xfs filesystem.

CVE-2010-3296: Fixed a kernel information leak in the cxgb3 driver.

CVE-2010-3297: Fixed a kernel information leak in the net/eql driver.

CVE-2010-2954: The irda_bind function in net/irda/af_irda.c in the Linux kernel did not properly handle failure of the irda_open_tsap function, which allowed local users to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact via multiple unsuccessful calls to bind on an AF_IRDA (aka PF_IRDA) socket.

CVE-2010-2946: The 'os2' xattr namespace on the jfs filesystem could be used to bypass xattr namespace rules.

CVE-2010-2942: Fixed a kernel information leak in the net scheduler code.

CVE-2010-3015: Integer overflow in the ext4_ext_get_blocks function in fs/ext4/extents.c in the Linux kernel allowed local users to cause a denial of service (BUG and system crash) via a write operation on the last block of a large file, followed by a sync operation.

CVE-2010-2803: The drm_ioctl function in drivers/gpu/drm/drm_drv.c in the Direct Rendering Manager (DRM) subsystem in the Linux kernel allowed local users to obtain potentially sensitive information from kernel memory by requesting a large memory-allocation amount.

CVE-2010-2798: The gfs2_dirent_find_space function in fs/gfs2/dir.c in the Linux kernel used an incorrect size value in calculations associated with sentinel directory entries, which allowed local users to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact by renaming a file in a GFS2 filesystem, related to the gfs2_rename function in fs/gfs2/ops_inode.c.

This SUSE Linux Enterprise 11 Service Pack 1 kernel contains various security fixes and lots of other bugfixes.

Notable larger bugfixes and changes :

  - 603464: Fix system freezewhen doing a network crashdump     with a netxen_nic driver

  - 610828: Avoid kernel failure on connects/disconnects to     a novell server with Novell Client 2.0

  - 612009: Fix Oracle issues due to problems with OCFS

  - 614332: Fix SMB processes stuck in uninteruptible sleep     when using (LVS/ClusteredIP) + CTDB + OCFS2

  - 619525: Fix igb driver regression

  - 626321: Add patch for Apparent OCFS2 corruption after     removing a bunch of reflinks

  - 627518: Avoid System hangs up after failed to copy files     from smb server

  - 629552: Skip Tape rewind during boot or a scsi scan The     following security issues were fixed :

  - insufficient range checks on the ETHTOOL_GRXCLSRLALL     command allowed local users to at least crash the     kernel. (CVE-2010-2478)

  - Specially crafted NFS write requests could crash the     kernel. (CVE-2010-2521)

  - a malicious local user could fill the cache used by CIFS     do perform dns lookups with chosen data, therefore     tricking the kernel into mounting a wrong CIFS server.
    (CVE-2010-2524)

  - a local user could overwrite append-only files on a     btrfs file system. (CVE-2010-2537)

  - a local user could read kernel memory of a btrfs file     system. (CVE-2010-2538)

  - local users could trigger a NULL derefence via gfs2 file     system. (CVE-2010-2798)

  - driver specific drm ioctl could leak kernel memory to     users with access to dri devices. (CVE-2010-2803)

  - 'tc dump' could leak some kernel memory. (CVE-2010-2942)

  - the 'os2' xaddr namespace could be used to bypass xattr     namespace rules. (CVE-2010-2946)

  - integer overflows in the CAN subsystem allowed attackers     to crash the kernel or gain privileges. (CVE-2010-2959)

  - certain write operations on an ext4 filesystem could     crash the kernel. (CVE-2010-3015)

This security update of the SUSE Linux Enterprise 11 GA kernel updates the kernel to 2.6.27.54 and fixes various security issues and other bugs.

The following security issues were fixed :

  - Multiple integer signedness errors in net/rose/af_rose.c     in the Linux kernel allowed local users to cause a     denial of service (heap memory corruption) or possibly     have unspecified other impact via a rose_getname     function call, related to the rose_bind and rose_connect     functions. (CVE-2010-3310)

  - A kernel information leak via the WEXT ioctl was fixed.
    (CVE-2010-2955)

  - A double free in an alsa error path was fixed, which     could lead to kernel crashes. (CVE-2010-3080)

  - Fixed a kernel information leak in the xfs filesystem.
    (CVE-2010-3078)

  - Fixed a kernel information leak in the cxgb3 driver.
    (CVE-2010-3296)

  - Fixed a kernel information leak in the net/eql driver.
    (CVE-2010-3297)

  - The irda_bind function in net/irda/af_irda.c in the     Linux kernel did not properly handle failure of the     irda_open_tsap function, which allowed local users to     cause a denial of service (NULL pointer dereference and     panic) and possibly have unspecified other impact via     multiple unsuccessful calls to bind on an AF_IRDA (aka     PF_IRDA) socket. (CVE-2010-2954)

  - The 'os2' xattr namespace on the jfs filesystem could be     used to bypass xattr namespace rules. (CVE-2010-2946)

  - Fixed a kernel information leak in the net scheduler     code. (CVE-2010-2942)

  - Integer overflow in the ext4_ext_get_blocks function in     fs/ext4/extents.c in the Linux kernel allowed local     users to cause a denial of service (BUG and system     crash) via a write operation on the last block of a     large file, followed by a sync operation.
    (CVE-2010-3015)

  - The drm_ioctl function in drivers/gpu/drm/drm_drv.c in     the Direct Rendering Manager (DRM) subsystem in the     Linux kernel allowed local users to obtain potentially     sensitive information from kernel memory by requesting a     large memory-allocation amount. (CVE-2010-2803)

  - The gfs2_dirent_find_space function in fs/gfs2/dir.c in     the Linux kernel used an incorrect size value in     calculations associated with sentinel directory entries,     which allowed local users to cause a denial of service     (NULL pointer dereference and panic) and possibly have     unspecified other impact by renaming a file in a GFS2     filesystem, related to the gfs2_rename function in     fs/gfs2/ops_inode.c. (CVE-2010-2798)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2010:0842 advisory.

  - kernel: drm ioctls infoleak (CVE-2010-2803)

  - kernel: wireless: fix 64K kernel heap content leak via ioctl (CVE-2010-2955)

  - kernel: arbitrary kernel memory write via i915 GEM ioctl (CVE-2010-2962)

  - kernel: ftrace NULL ptr deref (CVE-2010-3079)

  - kernel: 64-bit Compatibility Mode Stack Pointer Underflow (CVE-2010-3081)

  - kernel: niu: buffer overflow for ETHTOOL_GRXCLSRLALL (CVE-2010-3084)

  - kernel: IA32 System Call Entry Point Vulnerability (CVE-2010-3301)

  - kernel: sctp: do not reset the packet during sctp_packet_config (CVE-2010-3432)

  - kernel: pktcdvd ioctl dev_minor missing range check (CVE-2010-3437)

  - kernel: prevent heap corruption in snd_ctl_new() (CVE-2010-3442)

  - kvm: invalid selector in fs/gs causes kernel panic (CVE-2010-3698)

  - kernel: sctp memory corruption in HMAC handling (CVE-2010-3705)

  - kernel: RDS sockets local privilege escalation (CVE-2010-3904)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Some vulnerabilities were discovered and corrected in the Linux 2.6 kernel :

fs/namei.c in Linux kernel 2.6.18 through 2.6.34 does not always follow NFS automount symlinks, which allows attackers to have an unknown impact, related to LOOKUP_FOLLOW. (CVE-2010-1088)

The tc_fill_tclass function in net/sched/sch_api.c in the tc subsystem in the Linux kernel 2.4.x before 2.4.37.6 and 2.6.x before 2.6.31-rc9 does not initialize certain (1) tcm__pad1 and (2) tcm__pad2 structure members, which might allow local users to obtain sensitive information from kernel memory via unspecified vectors. (CVE-2009-3228)

The do_pages_move function in mm/migrate.c in the Linux kernel before 2.6.33-rc7 does not validate node values, which allows local users to read arbitrary kernel memory locations, cause a denial of service (OOPS), and possibly have unspecified other impact by specifying a node that is not part of the kernel node set. (CVE-2010-0415)

The ATI Rage 128 (aka r128) driver in the Linux kernel before 2.6.31-git11 does not properly verify Concurrent Command Engine (CCE) state initialization, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly gain privileges via unspecified ioctl calls. (CVE-2009-3620)

The wake_futex_pi function in kernel/futex.c in the Linux kernel before 2.6.33-rc7 does not properly handle certain unlock operations for a Priority Inheritance (PI) futex, which allows local users to cause a denial of service (OOPS) and possibly have unspecified other impact via vectors involving modification of the futex value from user space. (CVE-2010-0622)

The kvm_arch_vcpu_ioctl_set_sregs function in the KVM in Linux kernel 2.6 before 2.6.30, when running on x86 systems, does not validate the page table root in a KVM_SET_SREGS call, which allows local users to cause a denial of service (crash or hang) via a crafted cr3 value, which triggers a NULL pointer dereference in the gfn_to_rmap function.
(CVE-2009-2287)

The handle_dr function in arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 2.6.31.1 does not properly verify the Current Privilege Level (CPL) before accessing a debug register, which allows guest OS users to cause a denial of service (trap) on the host OS via a crafted application. (CVE-2009-3722)

The ext4_decode_error function in fs/ext4/super.c in the ext4 filesystem in the Linux kernel before 2.6.32 allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference), and possibly have unspecified other impact, via a crafted read-only filesystem that lacks a journal. (CVE-2009-4308)

The eisa_eeprom_read function in the parisc isa-eeprom component (drivers/parisc/eisa_eeprom.c) in the Linux kernel before 2.6.31-rc6 allows local users to access restricted memory via a negative ppos argument, which bypasses a check that assumes that ppos is positive and causes an out-of-bounds read in the readb function.
(CVE-2009-2846)

Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel before 2.6.34-rc6 allow remote attackers to cause a denial of service (panic) or possibly execute arbitrary code via a crafted NFSv4 compound WRITE request, related to the read_buf and nfsd4_decode_compound functions.
(CVE-2010-2521)

mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and CONFIG_SECURITY is disabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1643. (CVE-2008-7256)

The release_one_tty function in drivers/char/tty_io.c in the Linux kernel before 2.6.34-rc4 omits certain required calls to the put_pid function, which has unspecified impact and local attack vectors.
(CVE-2010-1162)

mm/shmem.c in the Linux kernel before 2.6.28-rc3, when strict overcommit is enabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors. (CVE-2010-1643)

The sctp_process_unk_param function in net/sctp/sm_make_chunk.c in the Linux kernel 2.6.33.3 and earlier, when SCTP is enabled, allows remote attackers to cause a denial of service (system crash) via an SCTPChunkInit packet containing multiple invalid parameters that require a large amount of error data. (CVE-2010-1173)

The Transparent Inter-Process Communication (TIPC) functionality in Linux kernel 2.6.16-rc1 through 2.6.33, and possibly other versions, allows local users to cause a denial of service (kernel OOPS) by sending datagrams through AF_TIPC before entering network mode, which triggers a NULL pointer dereference. (CVE-2010-1187)

The sctp_process_unk_param function in net/sctp/sm_make_chunk.c in the Linux kernel 2.6.33.3 and earlier, when SCTP is enabled, allows remote attackers to cause a denial of service (system crash) via an SCTPChunkInit packet containing multiple invalid parameters that require a large amount of error data. (CVE-2010-1173)

fs/cifs/cifssmb.c in the CIFS implementation in the Linux kernel before 2.6.34-rc4 allows remote attackers to cause a denial of service (panic) via an SMB response packet with an invalid CountHigh value, as demonstrated by a response from an OS/2 server, related to the CIFSSMBWrite and CIFSSMBWrite2 functions. (CVE-2010-2248)

Buffer overflow in the ecryptfs_uid_hash macro in fs/ecryptfs/messaging.c in the eCryptfs subsystem in the Linux kernel before 2.6.35 might allow local users to gain privileges or cause a denial of service (system crash) via unspecified vectors.
(CVE-2010-2492)

The xfs_swapext function in fs/xfs/xfs_dfrag.c in the Linux kernel before 2.6.35 does not properly check the file descriptors passed to the SWAPEXT ioctl, which allows local users to leverage write access and obtain read access by swapping one file into another file.
(CVE-2010-2226)

The gfs2_dirent_find_space function in fs/gfs2/dir.c in the Linux kernel before 2.6.35 uses an incorrect size value in calculations associated with sentinel directory entries, which allows local users to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact by renaming a file in a GFS2 filesystem, related to the gfs2_rename function in fs/gfs2/ops_inode.c. (CVE-2010-2798)

The do_anonymous_page function in mm/memory.c in the Linux kernel before 2.6.27.52, 2.6.32.x before 2.6.32.19, 2.6.34.x before 2.6.34.4, and 2.6.35.x before 2.6.35.2 does not properly separate the stack and the heap, which allows context-dependent attackers to execute arbitrary code by writing to the bottom page of a shared memory segment, as demonstrated by a memory-exhaustion attack against the X.Org X server. (CVE-2010-2240)

The drm_ioctl function in drivers/gpu/drm/drm_drv.c in the Direct Rendering Manager (DRM) subsystem in the Linux kernel before 2.6.27.53, 2.6.32.x before 2.6.32.21, 2.6.34.x before 2.6.34.6, and 2.6.35.x before 2.6.35.4 allows local users to obtain potentially sensitive information from kernel memory by requesting a large memory-allocation amount. (CVE-2010-2803)

Integer overflow in net/can/bcm.c in the Controller Area Network (CAN) implementation in the Linux kernel before 2.6.27.53, 2.6.32.x before 2.6.32.21, 2.6.34.x before 2.6.34.6, and 2.6.35.x before 2.6.35.4 allows attackers to execute arbitrary code or cause a denial of service (system crash) via crafted CAN traffic. (CVE-2010-2959)

Double free vulnerability in the snd_seq_oss_open function in sound/core/seq/oss/seq_oss_init.c in the Linux kernel before 2.6.36-rc4 might allow local users to cause a denial of service or possibly have unspecified other impact via an unsuccessful attempt to open the /dev/sequencer device. (CVE-2010-3080)

A vulnerability in Linux kernel caused by insecure allocation of user space memory when translating system call inputs to 64-bit. A stack pointer underflow can occur when using the compat_alloc_user_space method with an arbitrary length input. (CVE-2010-3081)

The IA32 system call emulation functionality in arch/x86/ia32/ia32entry.S in the Linux kernel before 2.6.36-rc4-git2 on the x86_64 platform does not zero extend the %eax register after the 32-bit entry path to ptrace is used, which allows local users to gain privileges by triggering an out-of-bounds access to the system call table using the %rax register. NOTE: this vulnerability exists because of a CVE-2007-4573 regression. (CVE-2010-3301)

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

This openSUSE 11.2 kernel was updated to 2.6.31.14, fixing several security issues and bugs.

A lot of ext4 filesystem stability fixes were also added.

Following security issues have been fixed: CVE-2010-3301: Mismatch between 32bit and 64bit register usage in the system call entry path could be used by local attackers to gain root privileges. This problem only affects x86_64 kernels.

CVE-2010-3081: Incorrect buffer handling in the biarch-compat buffer handling could be used by local attackers to gain root privileges.
This problem affects foremost x86_64, or potentially other biarch platforms, like PowerPC and S390x.

CVE-2010-3084: A buffer overflow in the ETHTOOL_GRXCLSRLALL code could be used to crash the kernel or potentially execute code.

CVE-2010-2955: A kernel information leak via the WEXT ioctl was fixed.

CVE-2010-2960: The keyctl_session_to_parent function in security/keys/keyctl.c in the Linux kernel expects that a certain parent session keyring exists, which allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a KEYCTL_SESSION_TO_PARENT argument to the keyctl function.

CVE-2010-3080: A double free in an alsa error path was fixed, which could lead to kernel crashes.

CVE-2010-3079: Fixed a ftrace NULL pointer dereference problem which could lead to kernel crashes.

CVE-2010-3298: Fixed a kernel information leak in the net/usb/hso driver.

CVE-2010-3296: Fixed a kernel information leak in the cxgb3 driver.

CVE-2010-3297: Fixed a kernel information leak in the net/eql driver.

CVE-2010-3078: Fixed a kernel information leak in the xfs filesystem.
CVE-2010-2942: Fixed a kernel information leak in the net scheduler code.

CVE-2010-2954: The irda_bind function in net/irda/af_irda.c in the Linux kernel did not properly handle failure of the irda_open_tsap function, which allowed local users to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact via multiple unsuccessful calls to bind on an AF_IRDA (aka PF_IRDA) socket.

CVE-2010-2226: The xfs_swapext function in fs/xfs/xfs_dfrag.c in the Linux kernel did not properly check the file descriptors passed to the SWAPEXT ioctl, which allowed local users to leverage write access and obtain read access by swapping one file into another file.

CVE-2010-2946: The 'os2' xattr namespace on the jfs filesystem could be used to bypass xattr namespace rules.

CVE-2010-2959: Integer overflow in net/can/bcm.c in the Controller Area Network (CAN) implementation in the Linux kernel allowed attackers to execute arbitrary code or cause a denial of service (system crash) via crafted CAN traffic.

CVE-2010-3015: Integer overflow in the ext4_ext_get_blocks function in fs/ext4/extents.c in the Linux kernel allowed local users to cause a denial of service (BUG and system crash) via a write operation on the last block of a large file, followed by a sync operation.

CVE-2010-2492: Buffer overflow in the ecryptfs_uid_hash macro in fs/ecryptfs/messaging.c in the eCryptfs subsystem in the Linux kernel might have allowed local users to gain privileges or cause a denial of service (system crash) via unspecified vectors.

CVE-2010-2248: fs/cifs/cifssmb.c in the CIFS implementation in the Linux kernel allowed remote attackers to cause a denial of service (panic) via an SMB response packet with an invalid CountHigh value, as demonstrated by a response from an OS/2 server, related to the CIFSSMBWrite and CIFSSMBWrite2 functions.

CVE-2010-2803: The drm_ioctl function in drivers/gpu/drm/drm_drv.c in the Direct Rendering Manager (DRM) subsystem in the Linux kernel allowed local users to obtain potentially sensitive information from kernel memory by requesting a large memory-allocation amount.

CVE-2010-2478: A potential buffer overflow in the ETHTOOL_GRXCLSRLALL ethtool code was fixed which could be used by local attackers to crash the kernel or potentially execute code.

CVE-2010-2524: The DNS resolution functionality in the CIFS implementation in the Linux kernel, when CONFIG_CIFS_DFS_UPCALL is enabled, relies on a user's keyring for the dns_resolver upcall in the cifs.upcall userspace helper, which allowed local users to spoof the results of DNS queries and perform arbitrary CIFS mounts via vectors involving an add_key call, related to a 'cache stuffing' issue and MS-DFS referrals.

CVE-2010-2798: The gfs2_dirent_find_space function in fs/gfs2/dir.c in the Linux kernel used an incorrect size value in calculations associated with sentinel directory entries, which allowed local users to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact by renaming a file in a GFS2 filesystem, related to the gfs2_rename function in fs/gfs2/ops_inode.c.

CVE-2010-2537: The BTRFS_IOC_CLONE and BTRFS_IOC_CLONE_RANGE ioctls allowed a local user to overwrite append-only files.

CVE-2010-2538: The BTRFS_IOC_CLONE_RANGE ioctl was subject to an integer overflow in specifying offsets to copy from a file, which potentially allowed a local user to read sensitive filesystem data.

CVE-2010-2521: Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel allowed remote attackers to cause a denial of service (panic) or possibly execute arbitrary code via a crafted NFSv4 compound WRITE request, related to the read_buf and nfsd4_decode_compound functions.

CVE-2010-2066: The mext_check_arguments function in fs/ext4/move_extent.c in the Linux kernel allowed local users to overwrite an append-only file via a MOVE_EXT ioctl call that specifies this file as a donor.

CVE-2010-2495: The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel did not properly validate certain values associated with an interface, which allowed attackers to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via vectors related to a routing change.

CVE-2010-2071: The btrfs_xattr_set_acl function in fs/btrfs/acl.c in btrfs in the Linux kernel did not check file ownership before setting an ACL, which allowed local users to bypass file permissions by setting arbitrary ACLs, as demonstrated using setfacl.

CVE-2010-1641: The do_gfs2_set_flags function in fs/gfs2/file.c in the Linux kernel did not verify the ownership of a file, which allowed local users to bypass intended access restrictions via a SETFLAGS ioctl request.

CVE-2010-1087: The nfs_wait_on_request function in fs/nfs/pagelist.c in Linux kernel 2.6.x allowed attackers to cause a denial of service (Oops) via unknown vectors related to truncating a file and an operation that is not interruptible.

CVE-2010-1636: The btrfs_ioctl_clone function in fs/btrfs/ioctl.c in the btrfs functionality in the Linux kernel did not ensure that a cloned file descriptor has been opened for reading, which allowed local users to read sensitive information from a write-only file descriptor.

CVE-2010-1437: Race condition in the find_keyring_by_name function in security/keys/keyring.c in the Linux kernel allowed local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via keyctl session commands that trigger access to a dead keyring that is undergoing deletion by the key_cleanup function.

CVE-2010-1148: The cifs_create function in fs/cifs/dir.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a NULL nameidata (aka nd) field in a POSIX file-creation request to a server that supports UNIX extensions.

CVE-2010-1162: The release_one_tty function in drivers/char/tty_io.c in the Linux kernel omitted certain required calls to the put_pid function, which has unspecified impact and local attack vectors.

CVE-2010-1146: The Linux kernel, when a ReiserFS filesystem exists, did not restrict read or write access to the .reiserfs_priv directory, which allowed local users to gain privileges by modifying (1) extended attributes or (2) ACLs, as demonstrated by deleting a file under .reiserfs_priv/xattrs/.

CVE-2009-4537: drivers/net/r8169.c in the r8169 driver in the Linux kernel did not properly check the size of an Ethernet frame that exceeds the MTU, which allowed remote attackers to (1) cause a denial of service (temporary network outage) via a packet with a crafted size, in conjunction with certain packets containing A characters and certain packets containing E characters; or (2) cause a denial of service (system crash) via a packet with a crafted size, in conjunction with certain packets containing '\0' characters, related to the value of the status register and erroneous behavior associated with the RxMaxSize register. NOTE: this vulnerability exists because of an incorrect fix for CVE-2009-1389.

USN-974-1 fixed vulnerabilities in the Linux kernel. The fixes for CVE-2010-2240 caused failures for Xen hosts. This update fixes the problem.

We apologize for the inconvenience.

Gael Delalleu, Rafal Wojtczuk, and Brad Spengler discovered that the memory manager did not properly handle when applications grow stacks into adjacent memory regions. A local attacker could exploit this to gain control of certain applications, potentially leading to privilege escalation, as demonstrated in attacks against the X server.
(CVE-2010-2240)

Kees Cook discovered that under certain situations the ioctl subsystem for DRM did not properly sanitize its arguments. A local attacker could exploit this to read previously freed kernel memory, leading to a loss of privacy. (CVE-2010-2803)

Ben Hawkes discovered an integer overflow in the Controller Area Network (CAN) subsystem when setting up frame content and filtering certain messages. An attacker could send specially crafted CAN traffic to crash the system or gain root privileges. (CVE-2010-2959).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2009-4895     Kyle Bader reported an issue in the tty subsystem that     allows local users to create a denial of service (NULL     pointer dereference).

  - CVE-2010-2226     Dan Rosenberg reported an issue in the xfs filesystem     that allows local users to copy and read a file owned by     another user, for which they only have write     permissions, due to a lack of permission checking in the     XFS_SWAPEXT ioctl.

  - CVE-2010-2240     Rafal Wojtczuk reported an issue that allows users to     obtain escalated privileges. Users must already have     sufficient privileges to execute or connect clients to     an Xorg server.

  - CVE-2010-2248     Suresh Jayaraman discovered an issue in the CIFS     filesystem. A malicious file server can set an incorrect     'CountHigh' value, resulting in a denial of service     (BUG_ON() assertion).

  - CVE-2010-2521     Neil Brown reported an issue in the NFSv4 server code. A     malicious client could trigger a denial of service     (Oops) on a server due to a bug in the read_buf()     routine.

  - CVE-2010-2798     Bob Peterson reported an issue in the GFS2 file system.
    A file system user could cause a denial of service     (Oops) via certain rename operations.

  - CVE-2010-2803     Kees Cook reported an issue in the DRM (Direct Rendering     Manager) subsystem. Local users with sufficient     privileges (local X users or members of the 'video'     group on a default Debian install) could acquire access     to sensitive kernel memory.

  - CVE-2010-2959     Ben Hawkes discovered an issue in the AF_CAN socket     family. An integer overflow condition may allow local     users to obtain elevated privileges.

  - CVE-2010-3015     Toshiyuki Okajima reported an issue in the ext4     filesystem. Local users could trigger a denial of     service (BUG assertion) by generating a specific set of     filesystem operations.

This update also includes fixes a regression introduced by a previous update. See the referenced Debian bug page for details.

Gael Delalleu, Rafal Wojtczuk, and Brad Spengler discovered that the memory manager did not properly handle when applications grow stacks into adjacent memory regions. A local attacker could exploit this to gain control of certain applications, potentially leading to privilege escalation, as demonstrated in attacks against the X server.
(CVE-2010-2240)

Kees Cook discovered that under certain situations the ioctl subsystem for DRM did not properly sanitize its arguments. A local attacker could exploit this to read previously freed kernel memory, leading to a loss of privacy. (CVE-2010-2803)

Ben Hawkes discovered an integer overflow in the Controller Area Network (CAN) subsystem when setting up frame content and filtering certain messages. An attacker could send specially crafted CAN traffic to crash the system or gain root privileges. (CVE-2010-2959).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
75549	openSUSE Security Update : kernel (openSUSE-SU-2010:0634-1)	Nessus	SuSE Local Security Checks	high
60893	Scientific Linux Security Update : kernel on SL6.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
53669	openSUSE Security Update : kernel (openSUSE-SU-2010:0895-2)	Nessus	SuSE Local Security Checks	high
51610	SuSE 11.1 Security Update : Linux kernel (SAT Patch Numbers 3068 / 3069 / 3070)	Nessus	SuSE Local Security Checks	critical
50925	SuSE 11 Security Update : Linux kernel (SAT Patch Numbers 3358 / 3361 / 3362)	Nessus	SuSE Local Security Checks	high
50629	RHEL 6 : kernel (RHSA-2010:0842)	Nessus	Red Hat Local Security Checks	high
49795	Mandriva Linux Security Advisory : kernel (MDVSA-2010:198)	Nessus	Mandriva Local Security Checks	critical
49671	openSUSE Security Update : kernel (openSUSE-SU-2010:0664-1)	Nessus	SuSE Local Security Checks	critical
49666	Mandriva Linux Security Advisory : kernel (MDVSA-2010:188)	Nessus	Mandriva Local Security Checks	critical
48904	Ubuntu 8.04 LTS : linux regression (USN-974-2)	Nessus	Ubuntu Local Security Checks	high
48387	Debian DSA-2094-1 : linux-2.6 - privilege escalation/denial of service/information leak	Nessus	Debian Local Security Checks	critical
48381	Ubuntu 6.06 LTS / 8.04 LTS / 9.04 / 9.10 / 10.04 LTS : linux, linux-{ec2,fsl-imx51,mvl-dove,source-2.6.15,ti-omap} vulnerabilities (USN-974-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2010-2803

high

Tenable Plugins

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critical

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critical

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critical

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