ALAS-2024-1952


Amazon Linux 1 Security Advisory: ALAS-2024-1952
Advisory Release Date: 2024-12-05 20:57 Pacific
Advisory Updated Date: 2025-01-06 23:07 Pacific
Severity: Important

Issue Overview:

2025-01-06: CVE-2021-46938 was added to this advisory.

2025-01-06: CVE-2021-33200 was added to this advisory.

2025-01-06: CVE-2021-29650 was added to this advisory.

A denial-of-service (DoS) flaw was identified in the Linux kernel due to an incorrect memory barrier in xt_replace_table in net/netfilter/x_tables.c in the netfilter subsystem. (CVE-2021-29650)

A flaw was found in kernel/bpf/verifier.c in BPF in the Linux kernel. An incorrect limit is enforced for pointer arithmetic operations which can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-33200)

In the Linux kernel, the following vulnerability has been resolved:

dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails (CVE-2021-46938)

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nftables: avoid overflows in nft_hash_buckets() (CVE-2021-46992)


Affected Packages:

kernel


Issue Correction:
Run yum update kernel to update your system.

New Packages:
i686:
    kernel-tools-debuginfo-4.14.238-125.421.amzn1.i686
    kernel-headers-4.14.238-125.421.amzn1.i686
    perf-4.14.238-125.421.amzn1.i686
    kernel-4.14.238-125.421.amzn1.i686
    kernel-debuginfo-4.14.238-125.421.amzn1.i686
    kernel-tools-4.14.238-125.421.amzn1.i686
    kernel-devel-4.14.238-125.421.amzn1.i686
    kernel-tools-devel-4.14.238-125.421.amzn1.i686
    kernel-debuginfo-common-i686-4.14.238-125.421.amzn1.i686
    perf-debuginfo-4.14.238-125.421.amzn1.i686

src:
    kernel-4.14.238-125.421.amzn1.src

x86_64:
    perf-4.14.238-125.421.amzn1.x86_64
    kernel-tools-debuginfo-4.14.238-125.421.amzn1.x86_64
    kernel-4.14.238-125.421.amzn1.x86_64
    kernel-headers-4.14.238-125.421.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.238-125.421.amzn1.x86_64
    kernel-tools-devel-4.14.238-125.421.amzn1.x86_64
    kernel-debuginfo-4.14.238-125.421.amzn1.x86_64
    kernel-devel-4.14.238-125.421.amzn1.x86_64
    perf-debuginfo-4.14.238-125.421.amzn1.x86_64
    kernel-tools-4.14.238-125.421.amzn1.x86_64