Out-of-bounds read in Linux kernel - CVE-2026-64231
Published: July 27, 2026
Vulnerability identifier: #VU139767
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-64231
CWE-ID: CWE-125
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 cause a denial of service.
The vulnerability exists due to an out-of-bounds read in msm_disp_snapshot_add_block when dumping DSI host registers after the IO base address is adjusted by io_offset. A local user can trigger register dumping to cause a denial of service.
The issue affects DSI 6G platforms.
How to mitigate CVE-2026-64231
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/567b5e976e2e15280d78c9ef2add1954a0bbb5b1
- https://git.kernel.org/stable/c/5b49a46baa853b26dbefa65c6c75dd9ff69f63d4
- https://git.kernel.org/stable/c/5e2c196c3430fb94225c4102b1028d0146544761
- https://git.kernel.org/stable/c/9f8274749d9010a1a72f97e547b7eb9ebb82345b
- https://git.kernel.org/stable/c/a184aec790135938b0fadb415e55accd1f8685a0
- https://git.kernel.org/stable/c/ab871d5882953e5574ae2bc47bec88c2e3d22663