Amazon Linux 2023 Security Advisory: ALAS2023-2026-1936
Advisory Released Date: 2026-07-07
Advisory Updated Date: 2026-07-07
Severity:
Important
References:
FAQs regarding Amazon Linux ALAS/CVE Severity
FAQs regarding Amazon Linux ALAS/CVE Severity
Issue Overview:
In the Linux kernel, the following vulnerability has been resolved:
net: fix fraggap accounting error in IPv4/IPv6 paged-allocation fragmentation paths
A fraggap accounting error in __ip6_append_data() and __ip_append_data() causes a heap buffer overflow (8-15 bytes) into the skb_shared_info structure at the tail of a packet's own head object. This allows an unprivileged local user, including from within unprivileged user namespaces and containers, to achieve privilege escalation, arbitrary code execution, container escape, denial of service, or information disclosure.
Affected Packages:
kernel
Issue Correction:
Run dnf update kernel --releasever 2023.12.20260706 or dnf update --advisory ALAS2023-2026-1936 --releasever 2023.12.20260706 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
aarch64:
kernel-tools-devel-6.1.176-220.360.amzn2023.aarch64
perf-debuginfo-6.1.176-220.360.amzn2023.aarch64
kernel-modules-extra-common-6.1.176-220.360.amzn2023.aarch64
kernel-livepatch-6.1.176-220.360-1.0-0.amzn2023.aarch64
kernel-modules-extra-6.1.176-220.360.amzn2023.aarch64
python3-perf-6.1.176-220.360.amzn2023.aarch64
python3-perf-debuginfo-6.1.176-220.360.amzn2023.aarch64
kernel-tools-debuginfo-6.1.176-220.360.amzn2023.aarch64
kernel-headers-6.1.176-220.360.amzn2023.aarch64
perf-6.1.176-220.360.amzn2023.aarch64
bpftool-6.1.176-220.360.amzn2023.aarch64
kernel-tools-6.1.176-220.360.amzn2023.aarch64
bpftool-debuginfo-6.1.176-220.360.amzn2023.aarch64
kernel-6.1.176-220.360.amzn2023.aarch64
kernel-debuginfo-common-aarch64-6.1.176-220.360.amzn2023.aarch64
kernel-debuginfo-6.1.176-220.360.amzn2023.aarch64
kernel-devel-6.1.176-220.360.amzn2023.aarch64
src:
kernel-6.1.176-220.360.amzn2023.src
x86_64:
perf-debuginfo-6.1.176-220.360.amzn2023.x86_64
kernel-modules-extra-6.1.176-220.360.amzn2023.x86_64
kernel-6.1.176-220.360.amzn2023.x86_64
kernel-debuginfo-common-x86_64-6.1.176-220.360.amzn2023.x86_64
kernel-modules-extra-common-6.1.176-220.360.amzn2023.x86_64
kernel-livepatch-6.1.176-220.360-1.0-0.amzn2023.x86_64
kernel-tools-debuginfo-6.1.176-220.360.amzn2023.x86_64
python3-perf-debuginfo-6.1.176-220.360.amzn2023.x86_64
bpftool-debuginfo-6.1.176-220.360.amzn2023.x86_64
kernel-tools-6.1.176-220.360.amzn2023.x86_64
kernel-headers-6.1.176-220.360.amzn2023.x86_64
kernel-tools-devel-6.1.176-220.360.amzn2023.x86_64
kernel-devel-6.1.176-220.360.amzn2023.x86_64
python3-perf-6.1.176-220.360.amzn2023.x86_64
bpftool-6.1.176-220.360.amzn2023.x86_64
perf-6.1.176-220.360.amzn2023.x86_64
kernel-debuginfo-6.1.176-220.360.amzn2023.x86_64