Synopsis
The remote Amazon Linux 2 host is missing a security update.
Description
The version of kernel installed on the remote host is prior to 5.10.213-201.855. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2024-052 advisory.
2024-07-03: CVE-2024-0841 was added to this advisory.
2024-06-06: CVE-2024-27417 was added to this advisory.
2024-05-23: CVE-2024-26782 was added to this advisory.
2024-05-23: CVE-2024-26736 was added to this advisory.
A flaw was found in the smb client in the Linux kernel. A potential out-of-bounds error was seen in the smb2_parse_contexts() function. Validate offsets and lengths before dereferencing create contexts in smb2_parse_contexts(). (CVE-2023-52434)
A null pointer dereference flaw was found in the hugetlbfs_fill_super function in the Linux kernel hugetlbfs (HugeTLB pages) functionality. This issue may allow a local user to crash the system or potentially escalate their privileges on the system. (CVE-2024-0841)
A vulnerability was discovered in the Linux kernel's IPv4 networking stack. Under certain conditions, MPTCP and NetLabel can be configured in a way that triggers a double free memory error in net/ipv4/af_inet.c:inet_sock_destruct(). This may lead to a system crash, denial of service, or potential arbitrary code execution. (CVE-2024-1627)
In the Linux kernel, the following vulnerability has been resolved:
ext4: regenerate buddy after block freeing failed if under fc replay
This mostly reverts commit 6bd97bf273bd (ext4: remove redundantmb_regenerate_buddy()) and reintroduces mb_regenerate_buddy(). Based oncode in mb_free_blocks(), fast commit replay can end up marking as freeblocks that are already marked as such. This causes corruption of thebuddy bitmap so we need to regenerate it in that case. (CVE-2024-26601)
In the Linux kernel, the following vulnerability has been resolved: afs: Increase buffer size in afs_update_volume_status() The max length of volume->vid value is 20 characters. So increase idbuf[] size up to 24 to avoid overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE. [DH:
Actually, it's 20 + NUL, so increase it to 24 and use snprintf()] (CVE-2024-26736)
In the Linux kernel, the following vulnerability has been resolved:
mptcp: fix double-free on socket dismantle (CVE-2024-26782)
In the Linux kernel, the following vulnerability has been resolved:
ipv6: fix potential struct net leak in inet6_rtm_getaddr() (CVE-2024-27417)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update kernel' to update your system.
Plugin Details
File Name: al2_ALASKERNEL-5_10-2024-052.nasl
Agent: unix
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
Vector: CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C
Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:bpftool, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:python-perf-debuginfo, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-headers, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:bpftool-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-livepatch-5.10.213-201.855, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:python-perf
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 3/27/2024
Vulnerability Publication Date: 2/20/2024