ALAS2023-2026-2131

Amazon Linux 2023 Security Advisory: ALAS2023-2026-2131
Advisory Released Date: 2026-09-10
Advisory Updated Date: 2026-09-10
Severity: Important
Issue Overview:

Fix GHSA-p7v4-vr35-mj6f; containerd CRI plugin: Checkpoint restore bypasses destination security context.
A vulnerability has been found in cilium ebpf up to 0.21.0. This affects the function loadRawSpec of the file btf/btf.go of the component LoadCollectionSpec/LoadCollectionSpecFromReader. Such manipulation of the argument offset leads to integer overflow. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The name of the patch is 533dfc82fd228bfadf42ea7180c39de7d9af47fa. A patch should be applied to remediate this issue. (CVE-2026-10722)

On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root. (CVE-2026-39822)

Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello. (CVE-2026-42505)


Affected Packages:

containerd


Issue Correction:
Run dnf update containerd --releasever 2023.12.20260909 or dnf update --advisory ALAS2023-2026-2131 --releasever 2023.12.20260909 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:
    containerd-stress-debuginfo-2.2.7-1.amzn2023.0.1.aarch64
    containerd-debuginfo-2.2.7-1.amzn2023.0.1.aarch64
    containerd-stress-2.2.7-1.amzn2023.0.1.aarch64
    containerd-2.2.7-1.amzn2023.0.1.aarch64
    containerd-debugsource-2.2.7-1.amzn2023.0.1.aarch64

src:
    containerd-2.2.7-1.amzn2023.0.1.src

x86_64:
    containerd-debuginfo-2.2.7-1.amzn2023.0.1.x86_64
    containerd-stress-debuginfo-2.2.7-1.amzn2023.0.1.x86_64
    containerd-stress-2.2.7-1.amzn2023.0.1.x86_64
    containerd-debugsource-2.2.7-1.amzn2023.0.1.x86_64
    containerd-2.2.7-1.amzn2023.0.1.x86_64

Additional References

Release Notes:  Amazon Linux 2023 Release Notes

Red Hat: CVE-2026-10722, CVE-2026-39822, CVE-2026-42505

Mitre: CVE-2026-10722, CVE-2026-39822, CVE-2026-42505