Riskcovery

CVE-2026-45897

netfilter: nft_counter: serialize reset with spinlock

State
Published
Severity
Not scored
Published
May 27, 2026
Updated
Sep 14, 2026
Reserved
May 13, 2026

Read the record on cve.org

Description

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

netfilter: nft_counter: serialize reset with spinlock

Add a global static spinlock to serialize counter fetch+reset operations, preventing concurrent dump-and-reset from underrunning values.

The lock is taken before fetching the total so that two parallel resets cannot both read the same counter values and then both subtract them.

A global lock is used for simplicity since resets are infrequent. If this becomes a bottleneck, it can be replaced with a per-net lock later.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • fb1adb05ea87b6149e65a31e511756c4f470d0cd to before e13194e60217db02c2e7202375d9e5951267d87bAffected
  • f123293db16dcd0cd81b246ae60e6362f0025d0a to before de6601f1374fab124cd9276df6671f64d940ceb4Affected
  • 3cb03edb4de33fd04c4ea55f47397b96a8657c53 to before 48cf7918d10c66cb6b05226fa3fa5daf0c891089Affected
  • 3cb03edb4de33fd04c4ea55f47397b96a8657c53 to before cd968dcdec6aee79a2d399e4f6e0eca63c3b45e1Affected
  • 3cb03edb4de33fd04c4ea55f47397b96a8657c53 to before 0cdc6d5a26f2d1f7f15a43526841b679445c32e2Affected
  • 3cb03edb4de33fd04c4ea55f47397b96a8657c53 to before 779c60a5190c42689534172f4b49e927c9959e4eAffected
  • 6.1.107 to before 6.1.188Affected
  • 6.6.48 to before 6.6.157Affected
LinuxLinux
  • 6.7Affected
  • before 6.7Not affected
  • 6.1.188 through 6.1.*Not affected
  • 6.6.157 through 6.6.*Not affected
  • 6.12.101 through 6.12.*Not affected
  • 6.18.42 through 6.18.*Not affected
  • 6.19.4 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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