CVE-2022-50499

HIGH EPSS 4.6%
Published Oct 4, 20259mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Oct 4, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: media: dvb-core: Fix double free in dvb_register_device() In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity(). Fix this by storing NULL to dvb->entity when it is freed.

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
4.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-415

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥4.9.195  –  <4.9.337
linuxlinux_kernel*≥4.14.147  –  <4.14.303
linuxlinux_kernel*≥4.19.77  –  <4.19.270
linuxlinux_kernel*≥5.2.19  –  <5.3
linuxlinux_kernel*≥5.3.4  –  <5.4.229
linuxlinux_kernel*≥5.5  –  <5.10.163
linuxlinux_kernel*≥5.11  –  <5.15.87
linuxlinux_kernel*≥5.16  –  <6.0.18
linuxlinux_kernel*≥6.1  –  <6.1.4

References 9

  • git.kernel.org https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d
    Patch