Integer underflow in Linux kernel - CVE-2022-49969
Published: June 20, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111624
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-49969
CWE-ID: CWE-191
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to integer underflow within the optc1_enable_optc_clock() function in drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c. A local user can execute arbitrary code.
How to mitigate CVE-2022-49969
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/3101839b080137c367f3f88c2a040f791de880aa
- https://git.kernel.org/stable/c/3c1dfeaeb3b4e3ea656041da1241e6ee3c3b3202
- https://git.kernel.org/stable/c/443687798d6f094412b7312b64b3bb4d99aedff7
- https://git.kernel.org/stable/c/5ee30bcfdb32526233d2572f3d9ec371928679f1
- https://git.kernel.org/stable/c/814b756d4ec3a8728debb116cf49005feada7750
- https://git.kernel.org/stable/c/b2a93490201300a749ad261b5c5d05cb50179c44
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.257
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.141
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.65
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.212
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0