CVE-2026-80669

bpf: Disable xfrm_decode_session hook attachment

State: Published
Severity: Not scored
Published: Aug 28, 2026
Updated: Aug 28, 2026
Reserved: Aug 26, 2026

Description

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

bpf: Disable xfrm_decode_session hook attachment

BPF LSM programs can currently attach to xfrm_decode_session(). That hook may return an error, but security_skb_classify_flow() calls it from a void path and triggers BUG_ON() if an error is returned.

Disable BPF attachment to the hook to prevent a BPF LSM program from turning packet classification into a full panic.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before aa265d47308775c5501073b08133623bcb5421f9Affected 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 6b44c6660aa1c9b843e450a623ac4a8484919dceAffected 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 4ae780d173ef40d4f7cb76935dc2d55fbf380009Affected 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 49fa1be621dde8f526d36e5791aded8fafda1e9cAffected 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9Affected 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 12091470c6b4c1c14b2de12dcbae2ada6cb6d20bAffected
LinuxLinux	5.7Affected before 5.7Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before aa265d47308775c5501073b08133623bcb5421f9Affected
9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 6b44c6660aa1c9b843e450a623ac4a8484919dceAffected
9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 4ae780d173ef40d4f7cb76935dc2d55fbf380009Affected
9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 49fa1be621dde8f526d36e5791aded8fafda1e9cAffected
9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9Affected
9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 to before 12091470c6b4c1c14b2de12dcbae2ada6cb6d20bAffected

LinuxLinux

5.7Affected
before 5.7Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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