CVE-2026-23139
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux Kernel
PublishedFeb 14, 2026
First seenFeb 14, 2026
How to fix
Update
- linux linux_kernel6.1.161, 6.6.121, 6.12.66, 6.18.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.19 ≤ v < 6.1.161, 6.2 ≤ v < 6.6.121, 6.7 ≤ v < 6.12.66, 6.13 ≤ v < 6.18.6, 6.19 | 6.1.161, 6.6.121, 6.12.66, 6.18.6 |
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