CVE-2026-72436
netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types Sashiko pointed out that there are a few lockless RCU readers using test_bit() which is a relaxed atomic operation and provides no memory barrier guarantees. Use test_bit_acquire() instead where the operation may run parallel with add/del/gc, i.e. is not one from the next cases - protected by region lock - in a set destroy phase - in a new/temporary set creation phase
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
18f84d41d34fa35d0d64bbaea01fe664553ecc06 < c107233d2ff4fd7cef5d02f9124b99194957a710 18f84d41d34fa35d0d64bbaea01fe664553ecc06 < 6329d3a9afe715fddda0460cfa46b496d61c2fe0 18f84d41d34fa35d0d64bbaea01fe664553ecc06 < 7445fe965b7d8756070a40e80f8b73348ccda1d7 18f84d41d34fa35d0d64bbaea01fe664553ecc06 < c4d257734e91bfcdc71d41843392dd6400b5bb1b 18f84d41d34fa35d0d64bbaea01fe664553ecc06 < 3219d74e4536658c937fd878a327257b86ce80dd 18f84d41d34fa35d0d64bbaea01fe664553ecc06 < e4b4984e28c16406ecb318444dea4a8bf47def3e
Linux / Linux
4.2
References
git.kernel.org: https://git.kernel.org/stable/c/c107233d2ff4fd7cef5d02f9124b99194957a710 git.kernel.org: https://git.kernel.org/stable/c/6329d3a9afe715fddda0460cfa46b496d61c2fe0 git.kernel.org: https://git.kernel.org/stable/c/7445fe965b7d8756070a40e80f8b73348ccda1d7 git.kernel.org: https://git.kernel.org/stable/c/c4d257734e91bfcdc71d41843392dd6400b5bb1b git.kernel.org: https://git.kernel.org/stable/c/3219d74e4536658c937fd878a327257b86ce80dd git.kernel.org: https://git.kernel.org/stable/c/e4b4984e28c16406ecb318444dea4a8bf47def3e