CVE-2026-31676

HIGH EPSS 30.7%
Published Apr 25, 20262mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Apr 25, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
30.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥2.6.22  –  <6.6.136
linuxlinux_kernel*≥6.7  –  <6.12.84
linuxlinux_kernel*≥6.13  –  <6.18.23
linuxlinux_kernel*≥6.19  –  <6.19.13
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0afdfd4941c1b60a1f5c361760daa970edca60cd
  • git.kernel.org https://git.kernel.org/stable/c/29b44d904dceb832be880def08b8cb17a0aba91c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6c3a0fbdafef8316e34ae22333e317a341e737cd
  • git.kernel.org https://git.kernel.org/stable/c/a1a8efde03a40b6c658d580e96644d9b9a2a0d3a
  • git.kernel.org https://git.kernel.org/stable/c/a6bcf8010af093fe04f7100562e9542ab7882585
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c43ffdcfdbb5567b1f143556df8a04b4eeea041c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/29b44d904dceb832be880def08b8cb17a0aba91c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a6bcf8010af093fe04f7100562e9542ab7882585
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c43ffdcfdbb5567b1f143556df8a04b4eeea041c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8
    Patch