CVE-2022-50036

MEDIUM EPSS 5.1%
Published Jun 18, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: dsi: Prevent underflow when computing packet sizes Currently, the packet overhead is subtracted using unsigned arithmetic. With a short sync pulse, this could underflow and wrap around to near the maximal u16 value. Fix this by using signed subtraction. The call to max() will correctly handle any negative numbers that are produced. Apply the same fix to the other timings, even though those subtractions are less likely to underflow.

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
5.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-191

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥4.18  –  <5.10.138
linuxlinux_kernel*≥5.11  –  <5.15.63
linuxlinux_kernel*≥5.16  –  <5.19.4
linuxlinux_kernel6.0any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/82a1356a933d8443139f8886f11b63c974a09a67
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/98e28de472ef248352f04f87e29e634ebb0ec240
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a1e7908f78f5a7f53f8cd83c7dcdfec974c95f26
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fb837f5b83461624e525727a8f4add14b201147e
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/82a1356a933d8443139f8886f11b63c974a09a67
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/98e28de472ef248352f04f87e29e634ebb0ec240
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a1e7908f78f5a7f53f8cd83c7dcdfec974c95f26
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fb837f5b83461624e525727a8f4add14b201147e
    Patch