CVE-2022-50359

MEDIUM EPSS 9.5%
Published Sep 17, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 17, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: media: cx88: Fix a null-ptr-deref bug in buffer_prepare() When the driver calls cx88_risc_buffer() to prepare the buffer, the function call may fail, resulting in a empty buffer and null-ptr-deref later in buffer_queue(). The following log can reveal it: [ 41.822762] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI [ 41.824488] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 41.828027] RIP: 0010:buffer_queue+0xc2/0x500 [ 41.836311] Call Trace: [ 41.836945] __enqueue_in_driver+0x141/0x360 [ 41.837262] vb2_start_streaming+0x62/0x4a0 [ 41.838216] vb2_core_streamon+0x1da/0x2c0 [ 41.838516] __vb2_init_fileio+0x981/0xbc0 [ 41.839141] __vb2_perform_fileio+0xbf9/0x1120 [ 41.840072] vb2_fop_read+0x20e/0x400 [ 41.840346] v4l2_read+0x215/0x290 [ 41.840603] vfs_read+0x162/0x4c0 Fix this by checking the return value of cx88_risc_buffer() [hverkuil: fix coding style issues]

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
9.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel* <4.9.331
linuxlinux_kernel*≥4.10  –  <4.14.296
linuxlinux_kernel*≥4.15  –  <4.19.262
linuxlinux_kernel*≥4.20  –  <5.4.220
linuxlinux_kernel*≥5.5  –  <5.10.150
linuxlinux_kernel*≥5.11  –  <5.15.75
linuxlinux_kernel*≥5.16  –  <5.19.17
linuxlinux_kernel*≥6.0  –  <6.0.3

References 9

  • git.kernel.org https://git.kernel.org/stable/c/10c99d1c46ea9cd940029e17bab11d021f315c21
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/704838040f3bdb4aa07ff4f26505a666a3defcfe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9181af2dbf06e7f432e5dbe88d10b22343e851b9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c2257c8a501537afab276c306cb717b7260276e1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/10c99d1c46ea9cd940029e17bab11d021f315c21
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/704838040f3bdb4aa07ff4f26505a666a3defcfe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9181af2dbf06e7f432e5dbe88d10b22343e851b9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c2257c8a501537afab276c306cb717b7260276e1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1
    Patch