CVE-2026-31583

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-31583
In the Linux kernel, the following vulnerability has been resolved: media: em28xx: fix use-after-free in em28xx_v4l2_open() em28xx_v4l2_open() reads dev->v4l2 without holding dev->lock, creating a race with em28xx_v4l2_init()'s error path and em28xx_v4l2_fini(), both of which free the em28xx_v4l2 struct and set dev->v4l2 to NULL under dev->lock. This race leads to two issues: - use-after-free in v4l2_fh_init() when accessing vdev->ctrl_handler, since the video_device is embedded in the freed em28xx_v4l2 struct. - NULL pointer dereference in em28xx_resolution_set() when accessing v4l2->norm, since dev->v4l2 has been set to NULL. Fix this by moving the mutex_lock() before the dev->v4l2 read and adding a NULL check for dev->v4l2 under the lock.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324 Patch
https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972 Patch
https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd Patch
https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff Patch
https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92 Patch
https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f 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:*:*:*:*:*:*:*:*
History

27 Apr 2026, 20:26

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324 - () https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324 - Patch
References () https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972 - () https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972 - Patch
References () https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd - () https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd - Patch
References () https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff - () https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff - Patch
References () https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92 - () https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92 - Patch
References () https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f - () https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f - Patch
CWE CWE-416
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux
Linux linux Kernel

27 Apr 2026, 14:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92 -

27 Apr 2026, 12:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff -

24 Apr 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-24 15:16

Updated : 2026-04-27 20:26

NVD link : CVE-2026-31583

Mitre link : CVE-2026-31583

CVE.ORG link : CVE-2026-31583

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free