SB2026081299 - Use-after-free in Linux kernel gpu host1x driver
Published: August 12, 2026
Security Bulletin ID
SB2026081299
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-68427)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.8 [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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in host1x_bo_clear_cached_mappings() when clearing cached mappings. A local user can trigger the vulnerable code path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/266cddf7bd0f6c79b6c0633aef742a22bf70265b
- https://git.kernel.org/stable/c/5b7e5f84d3d4cea10c3764d2da274810a7934228
- https://git.kernel.org/stable/c/5f4de3c717d34a24d555af581947742980778c02
- https://git.kernel.org/stable/c/abeff53233b984571b87582bb588b4b38ef4ea50
- https://git.kernel.org/stable/c/b773faa32b0a98c3eb2b50d96de631681e5d1157