CVE-2026-31408

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-31408
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold sco_recv_frame() reads conn->sk under sco_conn_lock() but immediately releases the lock without holding a reference to the socket. A concurrent close() can free the socket between the lock release and the subsequent sk->sk_state access, resulting in a use-after-free. Other functions in the same file (sco_sock_timeout(), sco_conn_del()) correctly use sco_sock_hold() to safely hold a reference under the lock. Fix by using sco_sock_hold() to take a reference before releasing the lock, and adding sock_put() on all exit paths.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_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/108b81514d8f2535eb16651495cefb2250528db3 Patch
https://git.kernel.org/stable/c/45aaca995e4a7a05b272a58e7ab2fff4f611b8f1 Patch
https://git.kernel.org/stable/c/598dbba9919c5e36c54fe1709b557d64120cb94b Patch
https://git.kernel.org/stable/c/7197462e90b8ce15caa1ae15d4bc2bb8cd21b11e Patch
https://git.kernel.org/stable/c/b0a7da0e3f7442545f071499beb36374714bb9de Patch
https://git.kernel.org/stable/c/d57384e27d1ebf0047e3f00a6e1181b8be9857a2 Patch
https://git.kernel.org/stable/c/e76e8f0581ef555eacc11dbb095e602fb30a5361 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
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:*:*:*:*:*:*
History

20 May 2026, 16:18

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/108b81514d8f2535eb16651495cefb2250528db3 - () https://git.kernel.org/stable/c/108b81514d8f2535eb16651495cefb2250528db3 - Patch
References () https://git.kernel.org/stable/c/45aaca995e4a7a05b272a58e7ab2fff4f611b8f1 - () https://git.kernel.org/stable/c/45aaca995e4a7a05b272a58e7ab2fff4f611b8f1 - Patch
References () https://git.kernel.org/stable/c/598dbba9919c5e36c54fe1709b557d64120cb94b - () https://git.kernel.org/stable/c/598dbba9919c5e36c54fe1709b557d64120cb94b - Patch
References () https://git.kernel.org/stable/c/7197462e90b8ce15caa1ae15d4bc2bb8cd21b11e - () https://git.kernel.org/stable/c/7197462e90b8ce15caa1ae15d4bc2bb8cd21b11e - Patch
References () https://git.kernel.org/stable/c/b0a7da0e3f7442545f071499beb36374714bb9de - () https://git.kernel.org/stable/c/b0a7da0e3f7442545f071499beb36374714bb9de - Patch
References () https://git.kernel.org/stable/c/d57384e27d1ebf0047e3f00a6e1181b8be9857a2 - () https://git.kernel.org/stable/c/d57384e27d1ebf0047e3f00a6e1181b8be9857a2 - Patch
References () https://git.kernel.org/stable/c/e76e8f0581ef555eacc11dbb095e602fb30a5361 - () https://git.kernel.org/stable/c/e76e8f0581ef555eacc11dbb095e602fb30a5361 - Patch
First Time Linux linux Kernel
Linux
CWE CWE-416

27 Apr 2026, 14:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 8.8

18 Apr 2026, 09:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/d57384e27d1ebf0047e3f00a6e1181b8be9857a2 -

11 Apr 2026, 13:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/b0a7da0e3f7442545f071499beb36374714bb9de -

06 Apr 2026, 08:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-06 08:16

Updated : 2026-05-20 16:18

NVD link : CVE-2026-31408

Mitre link : CVE-2026-31408

CVE.ORG link : CVE-2026-31408

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free