Amazon Linux 2 Security Advisory: ALASKERNEL-5.15-2024-040
Advisory Release Date: 2024-03-27 21:47 Pacific
Advisory Updated Date: 2024-03-27 21:47 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
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 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 redundant
mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on
code in mb_free_blocks(), fast commit replay can end up marking as free
blocks that are already marked as such. This causes corruption of the
buddy bitmap so we need to regenerate it in that case. (CVE-2024-26601)
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 - Kernel-5.15 Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel to update your system.
aarch64:
kernel-5.15.152-100.162.amzn2.aarch64
kernel-headers-5.15.152-100.162.amzn2.aarch64
kernel-debuginfo-common-aarch64-5.15.152-100.162.amzn2.aarch64
perf-5.15.152-100.162.amzn2.aarch64
perf-debuginfo-5.15.152-100.162.amzn2.aarch64
python-perf-5.15.152-100.162.amzn2.aarch64
python-perf-debuginfo-5.15.152-100.162.amzn2.aarch64
kernel-tools-5.15.152-100.162.amzn2.aarch64
kernel-tools-devel-5.15.152-100.162.amzn2.aarch64
kernel-tools-debuginfo-5.15.152-100.162.amzn2.aarch64
bpftool-5.15.152-100.162.amzn2.aarch64
bpftool-debuginfo-5.15.152-100.162.amzn2.aarch64
kernel-devel-5.15.152-100.162.amzn2.aarch64
kernel-debuginfo-5.15.152-100.162.amzn2.aarch64
kernel-livepatch-5.15.152-100.162-1.0-0.amzn2.aarch64
i686:
kernel-headers-5.15.152-100.162.amzn2.i686
src:
kernel-5.15.152-100.162.amzn2.src
x86_64:
kernel-5.15.152-100.162.amzn2.x86_64
kernel-headers-5.15.152-100.162.amzn2.x86_64
kernel-debuginfo-common-x86_64-5.15.152-100.162.amzn2.x86_64
perf-5.15.152-100.162.amzn2.x86_64
perf-debuginfo-5.15.152-100.162.amzn2.x86_64
python-perf-5.15.152-100.162.amzn2.x86_64
python-perf-debuginfo-5.15.152-100.162.amzn2.x86_64
kernel-tools-5.15.152-100.162.amzn2.x86_64
kernel-tools-devel-5.15.152-100.162.amzn2.x86_64
kernel-tools-debuginfo-5.15.152-100.162.amzn2.x86_64
bpftool-5.15.152-100.162.amzn2.x86_64
bpftool-debuginfo-5.15.152-100.162.amzn2.x86_64
kernel-devel-5.15.152-100.162.amzn2.x86_64
kernel-debuginfo-5.15.152-100.162.amzn2.x86_64
kernel-livepatch-5.15.152-100.162-1.0-0.amzn2.x86_64