CVE-2026-43916
pam_authnft: Heap buffer overflow in NETLINK_SOCK_DIAG reply walker
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 8.7EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
12 May 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
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
Affected products
identd-ng · pam_authnftWant to know if your infrastructure is exposed to this?
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