CVE-2026-80669 json
bpf: Disable xfrm_decode_session hook attachment
published 2026-08-28 2 mo ago modified 2026-11-06 2 d ago also EUVD-2026-67545
- cvss
- —
- not scored
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Linux Linux 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
- linux Debian 12 6.1.180-1
- linux Debian 13 6.12.100-1
- linux Debian 14 7.1.5-1
debian advisories DEBIAN-CVE-2026-80669
- linux Ubuntu 24.04 LTS 6.8.0-147.147
- linux Ubuntu 26.04 LTS 7.0.0-38.38
- linux-aws Ubuntu 24.04 LTS 6.8.0-1067.70
- linux-aws Ubuntu 26.04 LTS 7.0.0-1014.14
- linux-gcp Ubuntu 24.04 LTS 6.8.0-1071.79
- linux-gcp Ubuntu 26.04 LTS 7.0.0-1014.14
- linux-gke Ubuntu 24.04 LTS 6.8.0-1066.74
- linux-gke Ubuntu 26.04 LTS 7.0.0-1008.9
ubuntu advisories UBUNTU-CVE-2026-80669
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- git.kernel.org/stable/c/aa265d47308775c5501073b08133623bcb5421f9 commit
- git.kernel.org/stable/c/6b44c6660aa1c9b843e450a623ac4a8484919dce commit
- git.kernel.org/stable/c/4ae780d173ef40d4f7cb76935dc2d55fbf380009 commit
- git.kernel.org/stable/c/49fa1be621dde8f526d36e5791aded8fafda1e9c commit
- git.kernel.org/stable/c/1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9 commit
- git.kernel.org/stable/c/12091470c6b4c1c14b2de12dcbae2ada6cb6d20b commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-80669 updated cvss 5.5
kernel: bpf: Disable xfrm_decode_session hook attachment
-
Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernelaffected: workaround, no fix available “Fix deferred”
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 morenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 d ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
Affected products
- Linux Linux
Classification
- Technology feeds
References
- git.kernel.org /stable/c/aa265d47308775c5501073b08133623bcb5421f9
- git.kernel.org /stable/c/6b44c6660aa1c9b843e450a623ac4a8484919dce
- git.kernel.org /stable/c/4ae780d173ef40d4f7cb76935dc2d55fbf380009
- git.kernel.org /stable/c/49fa1be621dde8f526d36e5791aded8fafda1e9c
- git.kernel.org /stable/c/1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9
- git.kernel.org /stable/c/12091470c6b4c1c14b2de12dcbae2ada6cb6d20b
Sources
- CVE List CVE-2026-80669
- NVD CVE-2026-80669
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.