CVE-2026-98873

netfilter: nf_conntrack_expect: zero at allocation time

State: Published
Severity: Not scored
Published: Oct 23, 2026
Updated: Oct 26, 2026
Reserved: Sep 25, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_conntrack_expect: zero at allocation time

There are occasional LLM hints wrt. leaking uninitialized data to userspace via ctnetlink. Just zero at allocation time, expectations are not frequently used these days.

Intentionally keeps _init as-is because we could theoretically support re-init, so add the missing exp->dir there.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	076a0ca02644657b13e4af363f487ced2942e9cb to before 39cb6ff947c16a576ea68c5f272e634acdcb0085Affected 076a0ca02644657b13e4af363f487ced2942e9cb to before 90545aa07a183887e9d72ce573c18e08f62e2c91Affected 076a0ca02644657b13e4af363f487ced2942e9cb to before 9c11d7ea5ff4dbe162e79f00188814ef5483c295Affected 076a0ca02644657b13e4af363f487ced2942e9cb to before b7f3ee925aee9f1f547d539bc03c35433c238958Affected 076a0ca02644657b13e4af363f487ced2942e9cb to before 824397af7bfe14edad374c64253dae0187ca623dAffected 076a0ca02644657b13e4af363f487ced2942e9cb to before a39ecb856514274c80d0fac4d128dba6b266a8edAffected 076a0ca02644657b13e4af363f487ced2942e9cb to before 241ccd2fed9051db443aadce248fc0ab30f55e97Affected
LinuxLinux	3.4Affected before 3.4Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

076a0ca02644657b13e4af363f487ced2942e9cb to before 39cb6ff947c16a576ea68c5f272e634acdcb0085Affected
076a0ca02644657b13e4af363f487ced2942e9cb to before 90545aa07a183887e9d72ce573c18e08f62e2c91Affected
076a0ca02644657b13e4af363f487ced2942e9cb to before 9c11d7ea5ff4dbe162e79f00188814ef5483c295Affected
076a0ca02644657b13e4af363f487ced2942e9cb to before b7f3ee925aee9f1f547d539bc03c35433c238958Affected
076a0ca02644657b13e4af363f487ced2942e9cb to before 824397af7bfe14edad374c64253dae0187ca623dAffected
076a0ca02644657b13e4af363f487ced2942e9cb to before a39ecb856514274c80d0fac4d128dba6b266a8edAffected
076a0ca02644657b13e4af363f487ced2942e9cb to before 241ccd2fed9051db443aadce248fc0ab30f55e97Affected

LinuxLinux

3.4Affected
before 3.4Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2 and laterNot affected

References

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