CVE-2026-23139
Severity
5.5MEDIUM
EPSS
0.0%
top 91.17%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 14
Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conncount: update last_gc only when GC has been performed
Currently last_gc is being updated everytime a new connection is
tracked, that means that it is updated even if a GC wasn't performed.
With a sufficiently high packet rate, it is possible to always bypass
the GC, causing the list to grow infinitely.
Update the last_gc value only when a GC has been actually performed.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6
Affected Packages3 packages
▶CVEListV5linux/linuxf106694733c66a48740c25bc4e212e9b2ea364ce — 2c7c71113ed6d3e2f3aca4c088f22283016ff34f+7
Patches
🔴Vulnerability Details
3OSV▶
CVE-2026-23139: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conncount: update last_gc only when GC has been performed Currently↗2026-02-14
GHSA▶
GHSA-cf2j-m586-269w: In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conncount: update last_gc only when GC has been performed
Currentl↗2026-02-14