EUVD-2026-29474CVSS VectorNVD
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
6DescriptionNVD
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.
AnalysisAI
Heap buffer over-read in pam_authnft allows remote denial-of-service via crafted netlink messages. pam_authnft < 0.2.0-alpha contains a CWE-125 buffer over-read in the peer_lookup_tcp function when parsing NETLINK_SOCK_DIAG replies, allowing unauthenticated network attackers to trigger crashes by sending malformed netlink diagnostic messages that bypass message-size validation. …
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RemediationAI
Within 24 hours: inventory all systems running pam_authnft and confirm current version. Within 7 days: upgrade pam_authnft to version 0.2.0-alpha or later on all affected systems and validate via package manager or GitHub release verification. …
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External POC / Exploit Code
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