CVE-2026-72436

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

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3219d74e4536658c937fd878a327257b86ce80dd
https://git.kernel.org/stable/c/6329d3a9afe715fddda0460cfa46b496d61c2fe0
https://git.kernel.org/stable/c/7445fe965b7d8756070a40e80f8b73348ccda1d7
https://git.kernel.org/stable/c/c107233d2ff4fd7cef5d02f9124b99194957a710
https://git.kernel.org/stable/c/c4d257734e91bfcdc71d41843392dd6400b5bb1b
https://git.kernel.org/stable/c/e4b4984e28c16406ecb318444dea4a8bf47def3e

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-08-17 06:19

NVD link : CVE-2026-72436

Mitre link : CVE-2026-72436

CVE.ORG link : CVE-2026-72436

JSON object : View

Products Affected

No product.

CWE

No CWE.

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