CVE-2026-31676

Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 25 Apr 2026, 08:46
Last modified:01 Jun 2026, 16:13

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.39% LOW
0% probability +0.27%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Apr 2026, 08:46
Published
Vulnerability first disclosed
01 Jun 2026, 16:13
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.39%• Percentile: 30%

Affected Systems

  • linux•linux

    ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < a1a8efde03a40b6c658d580e96644d9b9a2a0d3a | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 6c3a0fbdafef8316e34ae22333e317a341e737cd | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 0afdfd4941c1b60a1f5c361760daa970edca60cd | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < a6bcf8010af093fe04f7100562e9542ab7882585 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 29b44d904dceb832be880def08b8cb17a0aba91c | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < d0035e634dae83237ab7f5681eb52b2f65d0ceb8 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 03fd2ef73cb4ffd0af100a95b634af54f474414e | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < c43ffdcfdbb5567b1f143556df8a04b4eeea041c | 2.6.22

  • linux•linux_kernel

    ≥ 2.6.22, < 6.6.136 | ≥ 6.7, < 6.12.84 | ≥ 6.13, < 6.18.23 | ≥ 6.19, < 6.19.13 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7

References (8)