CVE-2026-43916
8.7
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| identd-ng | pam_authnft | < 0.2.0-alpha | affected |
Weaknesses
- CWE-125: CWE-125: Out-of-bounds Read
- CWE-191: CWE-191: Integer Underflow (Wrap or Wraparound)
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
- https://github.com/identd-ng/pam_authnft/security/advisories/GHSA-5jj5-hm34-78vh
- https://github.com/identd-ng/pam_authnft/pull/10
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