CVE-2026-43916
High
Description
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.
SeverityHigh
CVSS8.7
Exploit probability18. percentile0.3%
ProductIdentd-ng Pam Authnft
PublishedMay 12, 2026
First seenMay 12, 2026
Weakness typeCWE-125Out-of-bounds readCWE-191CWE-191
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| identd-ng pam_authnft | < 0.2.0-alpha | — |
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