CVE-2026-31676

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

25/04/2026

Last modified:

06/05/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	2.6.22 (including)	6.6.136 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.84 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.18.23 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.19 (including)	6.19.13 (excluding)
cpe:2.3:o:linux:linux_kernel:7.0:rc1::::::
cpe:2.3:o:linux:linux_kernel:7.0:rc2::::::
cpe:2.3:o:linux:linux_kernel:7.0:rc3::::::
cpe:2.3:o:linux:linux_kernel:7.0:rc4::::::
cpe:2.3:o:linux:linux_kernel:7.0:rc5::::::
cpe:2.3:o:linux:linux_kernel:7.0:rc6::::::
cpe:2.3:o:linux:linux_kernel:7.0:rc7::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-31676

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools