medium5.5
CVE-2026-45897
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_counter: serialize reset with spinlock Add a global static spinlock to seria…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 6.1.107 before 6.2 from 6.6.48 before 6.19.4 |
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/0cdc6d5a26f2d1f7f15a43526841b679445c32e2
- https://git.kernel.org/stable/c/48cf7918d10c66cb6b05226fa3fa5daf0c891089
- https://git.kernel.org/stable/c/779c60a5190c42689534172f4b49e927c9959e4e
- https://git.kernel.org/stable/c/cd968dcdec6aee79a2d399e4f6e0eca63c3b45e1
- https://git.kernel.org/stable/c/de6601f1374fab124cd9276df6671f64d940ceb4
- https://git.kernel.org/stable/c/e13194e60217db02c2e7202375d9e5951267d87b