CVE-2026-31583

HIGH EPSS 2.8%
Published Apr 24, 20262mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Apr 24, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel* <6.6.136
linuxlinux_kernel*≥6.12  –  <6.12.83
linuxlinux_kernel*≥6.13  –  <6.18.24
linuxlinux_kernel*≥6.19  –  <6.19.14
linuxlinux_kernel*≥7.0  –  <7.0.1

References 9

  • git.kernel.org https://git.kernel.org/stable/c/2cbf81f76842e46bdf25823c70e1db4044a65678
  • git.kernel.org https://git.kernel.org/stable/c/38a327221f7f765e7d853b7bafe47e342441ec85
  • git.kernel.org https://git.kernel.org/stable/c/3c0283a59e36e3707c4a81f4952e362d31f876b8
  • git.kernel.org https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f
    Patch