CVE-2026-43916

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Source

https://cve.org/CVERecord?id=CVE-2026-43916

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43916.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-43916

Aliases

GHSA-5jj5-hm34-78vh

Downstream

UBUNTU-CVE-2026-43916

Published

2026-05-12T13:31:44.359Z

Modified

2026-07-08T08:13:29.504241184Z

Severity

8.7 (High) CVSS_V4 - 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 CVSS Calculator

Summary

pam_authnft: Heap buffer overflow in NETLINK_SOCK_DIAG reply walker

Details

pamauthnft 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 peerlookuptcp (src/peerlookup.c:134, prior to the fix) allowed a crafted NETLINKSOCKDIAG 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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43916.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-125",
        "CWE-191"
    ]
}

References

Affected packages

Git / github.com/identd-ng/pam_authnft

Affected ranges

Type

GIT

Repo

https://github.com/identd-ng/pam_authnft

Events

Introduced

Fixed

75f2c8bfb0ffc63e68979928e0b1aa3f457263aa

Database specific

{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.2.0-alpha"
        }
    ]
}

Affected versions

v0.*

v0.1.0-alpha

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43916.json"