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Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: only handle RESPONSE during service challenge Only process RESPONSE packets while the service connection is still in RXRPC_CONN_SERVICE_CHALLENGING. Check that state under state_lock before running response verification and security initialization, then use a local secured flag to decide whether to queue the secured-connection work after the state transition. This keeps duplicate or late RESPONSE packets from re-running the setup path and removes the unlocked post-transition state test.

PUBLISHED Reserved 2026-03-09 | Published 2026-04-25 | Updated 2026-04-27 | Assigner Linux




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Product status

Default status
unaffected

17926a79320afa9b95df6b977b40cca6d8713cea (git) before a6bcf8010af093fe04f7100562e9542ab7882585
affected

17926a79320afa9b95df6b977b40cca6d8713cea (git) before 29b44d904dceb832be880def08b8cb17a0aba91c
affected

17926a79320afa9b95df6b977b40cca6d8713cea (git) before d0035e634dae83237ab7f5681eb52b2f65d0ceb8
affected

17926a79320afa9b95df6b977b40cca6d8713cea (git) before 03fd2ef73cb4ffd0af100a95b634af54f474414e
affected

17926a79320afa9b95df6b977b40cca6d8713cea (git) before c43ffdcfdbb5567b1f143556df8a04b4eeea041c
affected

Default status
affected

2.6.22
affected

Any version before 2.6.22
unaffected

6.6.136 (semver)
unaffected

6.12.84 (semver)
unaffected

6.18.23 (semver)
unaffected

6.19.13 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/a6bcf8010af093fe04f7100562e9542ab7882585

git.kernel.org/...c/29b44d904dceb832be880def08b8cb17a0aba91c

git.kernel.org/...c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8

git.kernel.org/...c/03fd2ef73cb4ffd0af100a95b634af54f474414e

git.kernel.org/...c/c43ffdcfdbb5567b1f143556df8a04b4eeea041c

cve.org (CVE-2026-31676)

nvd.nist.gov (CVE-2026-31676)

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