The remote Redhat Enterprise Linux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2010:0474 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux     operating system.

    Security fixes:

    * a NULL pointer dereference flaw was found in the Linux kernel NFSv4     implementation. Several of the NFSv4 file locking functions failed to check     whether a file had been opened on the server before performing locking     operations on it. A local, unprivileged user on a system with an NFSv4     share mounted could possibly use this flaw to cause a kernel panic (denial     of service) or escalate their privileges. (CVE-2009-3726, Important)

    * a flaw was found in the sctp_process_unk_param() function in the Linux     kernel Stream Control Transmission Protocol (SCTP) implementation. A remote     attacker could send a specially-crafted SCTP packet to an SCTP listening     port on a target system, causing a kernel panic (denial of service).
    (CVE-2010-1173, Important)

    * a race condition between finding a keyring by name and destroying a freed     keyring was found in the Linux kernel key management facility. A local,     unprivileged user could use this flaw to cause a kernel panic (denial of     service) or escalate their privileges. (CVE-2010-1437, Important)

    Red Hat would like to thank Simon Vallet for responsibly reporting     CVE-2009-3726; and Jukka Taimisto and Olli Jarva of Codenomicon Ltd, Nokia     Siemens Networks, and Wind River on behalf of their customer, for     responsibly reporting CVE-2010-1173.

    Bug fixes:

    * RHBA-2007:0791 introduced a regression in the Journaling Block Device     (JBD). Under certain circumstances, removing a large file (such as 300 MB     or more) did not result in inactive memory being freed, leading to the     system having a large amount of inactive memory. Now, the memory is     correctly freed. (BZ#589155)

    * the timer_interrupt() routine did not scale lost real ticks to logical     ticks correctly, possibly causing time drift for 64-bit Red Hat Enterprise     Linux 4 KVM (Kernel-based Virtual Machine) guests that were booted with the     divider=x kernel parameter set to a value greater than 1. warning: many     lost ticks messages may have been logged on the affected guest systems.
    (BZ#590551)

    * a bug could have prevented NFSv3 clients from having the most up-to-date     file attributes for files on a given NFSv3 file system. In cases where a     file type changed, such as if a file was removed and replaced with a     directory of the same name, the NFSv3 client may not have noticed this     change until stat(2) was called (for example, by running ls -l).
    (BZ#596372)

    * RHBA-2007:0791 introduced bugs in the Linux kernel PCI-X subsystem. These     could have caused a system deadlock on some systems where the BIOS set the     default Maximum Memory Read Byte Count (MMRBC) to 4096, and that also use     the Intel PRO/1000 Linux driver, e1000. Errors such as e1000: eth[x]:
    e1000_clean_tx_irq: Detected Tx Unit Hang were logged. (BZ#596374)

    * an out of memory condition in a KVM guest, using the virtio-net network     driver and also under heavy network stress, could have resulted in     that guest being unable to receive network traffic. Users had to manually     remove and re-add the virtio_net module and restart the network service     before networking worked as expected. Such memory conditions no longer     prevent KVM guests receiving network traffic. (BZ#597310)

    * when an SFQ qdisc that limited the queue size to two packets was added to     a network interface, sending traffic through that interface resulted in a     kernel crash. Such a qdisc no longer results in a kernel crash. (BZ#597312)

    * when an NFS client opened a file with the O_TRUNC flag set, it received     a valid stateid, but did not use that stateid to perform the SETATTR call.
    Such cases were rejected by Red Hat Enterprise Linux 4 NFS servers with an     NFS4ERR_BAD_STATEID error, possibly preventing some NFS clients from     writing files to an NFS file system. (BZ#597314)

    Users should upgrade to these updated packages, which contain backported     patches to correct these issues. The system must be rebooted for this     update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Detections

Analytics

RHEL 4 : kernel (RHSA-2010:0474)

high Nessus Plugin ID 47026

Version 1.26