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NVD / CVE Program· CNA Linux

CVE-2026-80669: bpf: Disable xfrm_decode_session hook attachment

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 12091470c6b4c1c14b2de12dcbae2ada6cb6d20b, 1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9, 49fa1be621dde8f526d36e5791aded8fafda1e9c.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 12091470c6b4c1c14b2de12dcbae2ada6cb6d20b, 1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9, 49fa1be621dde8f526d36e5791aded8fafda1e9c or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Aug 28, 2026
Updated
Aug 28, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.7affected
    • 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 and later · before aa265d47308775c5501073b08133623bcb5421f9affected · git
    • 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 and later · before 6b44c6660aa1c9b843e450a623ac4a8484919dceaffected · git
    • 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 and later · before 4ae780d173ef40d4f7cb76935dc2d55fbf380009affected · git
    • 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 and later · before 49fa1be621dde8f526d36e5791aded8fafda1e9caffected · git
    • 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 and later · before 1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9affected · git
    • 9e4e01dfd3254c7f04f24b7c6b29596bc12332f3 and later · before 12091470c6b4c1c14b2de12dcbae2ada6cb6d20baffected · git
    • before 5.7not affected · semver
    • 6.1.178 and later · up to and including 6.1.*not affected · semver
    • 6.6.145 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-80666Aug 28, 2026 · Bluetooth: sco: Fix a race condition in sco_sock_timeout()
    0Monitor
  • ← EarlierCVE-2026-80667Aug 28, 2026 · net/mlx5: LAG, MPESW, Fix missing complete() on devcom error
    0Monitor
  • Later →CVE-2026-80670Aug 28, 2026 · perf tools: Use perf_env__get_cpu_topology() in machine__resolve()
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux12091470c6b4c1c14b2de12dcbae2ada6cb6d20bVendor (CNA)
Linux Linux1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9Vendor (CNA)
Linux Linux49fa1be621dde8f526d36e5791aded8fafda1e9cVendor (CNA)
Linux Linux4ae780d173ef40d4f7cb76935dc2d55fbf380009Vendor (CNA)
Linux Linux6b44c6660aa1c9b843e450a623ac4a8484919dceVendor (CNA)
Linux Linuxaa265d47308775c5501073b08133623bcb5421f9Vendor (CNA)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records