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CVE-2026-43916

pam_authnft is a PAM session module binding nftables firewall rules to authenticated sessions via cgroupv2 inodes. Prior to 0.2.0-alpha, a heap buffer over-read in peer_lookup_tcp (src/peer_lookup.c:134, prior to the fix) allowed a crafted NETLINK_SOCK_DIAG reply to slip past the message-size check, then dereference past the end of the allocation. This vulnerability is fixed in 0.2.0-alpha.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:57f3bb1cd7dc7035f48f81302b19b8a8ef77fe3ad102b2b1ee41a034e179b196
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-191","description":"CWE-191: Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dea7c0bd3bb46c59b5ad2b5d10cf4380ab72c9e0dbac9c5232864af2edde328c · sha256:7a31be9ba6cc0b63… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dea7c0bd3bb46c59b5ad2b5d10cf4380ab72c9e0dbac9c5232864af2edde328c · sha256:7a31be9ba6cc0b63… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"pam_authnft","vendor":"identd-ng","versions":[{"status":"affected","version":"< 0.2.0-alpha"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dea7c0bd3bb46c59b5ad2b5d10cf4380ab72c9e0dbac9c5232864af2edde328c · sha256:7a31be9ba6cc0b63… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:dea7c0bd3bb46c59b5ad2b5d10cf4380ab72c9e0dbac9c5232864af2edde328c · sha256:7a31be9ba6cc0b63… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-191","description":"CWE-191: Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dea7c0bd3bb46c59b5ad2b5d10cf4380ab72c9e0dbac9c5232864af2edde328c · sha256:7a31be9ba6cc0b63… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dea7c0bd3bb46c59b5ad2b5d10cf4380ab72c9e0dbac9c5232864af2edde328c · sha256:7a31be9ba6cc0b63… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/identd-ng/pam_authnft/pull/10","tags":["x_refsource_MISC"],"url":"https://github.com/identd-ng/pam_authnft/pull/10"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dea7c0bd3bb46c59b5ad2b5d10cf4380ab72c9e0dbac9c5232864af2edde328c · sha256:7a31be9ba6cc0b63… · /containers/cna/references/1
{"name":"https://github.com/identd-ng/pam_authnft/security/advisories/GHSA-5jj5-hm34-78vh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/identd-ng/pam_authnft/security/advisories/GHSA-5jj5-hm34-78vh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dea7c0bd3bb46c59b5ad2b5d10cf4380ab72c9e0dbac9c5232864af2edde328c · sha256:7a31be9ba6cc0b63… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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