CVE-2026-45897
published 2026-05-27CVE-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…
medium5.5
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
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 3cb03edb4de33fd04c4ea55f47397b96a8657c53 < 0cdc6d5a26f2d1f7f15a43526841b679445c32e2 | 0cdc6d5a26f2d1f7f15a43526841b679445c32e2 |
| linux | linux | >= 3cb03edb4de33fd04c4ea55f47397b96a8657c53 < 779c60a5190c42689534172f4b49e927c9959e4e | 779c60a5190c42689534172f4b49e927c9959e4e |
| linux | linux | >= 6.1.107 < 6.2 | 6.2 |
| linux | linux | >= 6.6.48 < 6.7 | 6.7 |
| linux | linux_kernel | — | — |