CVE-2022-48987

MEDIUM EPSS 16.0%
Published Oct 21, 20241y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 21, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-dv-timings.c: fix too strict blanking sanity checks Sanity checks were added to verify the v4l2_bt_timings blanking fields in order to avoid integer overflows when userspace passes weird values. But that assumed that userspace would correctly fill in the front porch, backporch and sync values, but sometimes all you know is the total blanking, which is then assigned to just one of these fields. And that can fail with these checks. So instead set a maximum for the total horizontal and vertical blanking and check that each field remains below that. That is still sufficient to avoid integer overflows, but it also allows for more flexibility in how userspace fills in these fields.

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
16.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥4.9.332  –  <4.9.336
linuxlinux_kernel*≥4.14.298  –  <4.14.302
linuxlinux_kernel*≥4.19.264  –  <4.19.269
linuxlinux_kernel*≥5.4.226  –  <5.4.227
linuxlinux_kernel*≥5.10.153  –  <5.10.159
linuxlinux_kernel*≥5.15.77  –  <5.15.83
linuxlinux_kernel*≥6.0.7  –  <6.0.13

References 8

  • git.kernel.org https://git.kernel.org/stable/c/0d73b49c4037199472b29574ae21c21aef493971
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2572ab14b73aa45b6ae7e4c089ccf119fed5cf89
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/32f01f0306a98629508f84d7ef0d1d037bc274a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4afc77068e36cee45b39d4fdc7513de26980f72c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5eef2141776da02772c44ec406d6871a790761ee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6fb8bc29bfa80707994a63cc97e2f9920e0b0608
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a2b56627c0d13009e02f6f2c0206c0451ed19a0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d3d14cdf1c7ae2caa3e999bae95ba99e955fb7c3
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0d73b49c4037199472b29574ae21c21aef493971
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2572ab14b73aa45b6ae7e4c089ccf119fed5cf89
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/32f01f0306a98629508f84d7ef0d1d037bc274a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4afc77068e36cee45b39d4fdc7513de26980f72c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5eef2141776da02772c44ec406d6871a790761ee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6fb8bc29bfa80707994a63cc97e2f9920e0b0608
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a2b56627c0d13009e02f6f2c0206c0451ed19a0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d3d14cdf1c7ae2caa3e999bae95ba99e955fb7c3
    Patch