SB2026062599 - NULL pointer dereference in Linux kernel drm sun4i driver
Published: June 25, 2026
Security Bulletin ID
SB2026062599
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) NULL pointer dereference (CVE-ID: CVE-2026-53066)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of error pointers in sun4i_backend_atomic_check() in drivers/gpu/drm/sun4i/sun4i_backend.c when processing atomic plane state checks. A local user can trigger an error pointer dereference to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/06277983eca4a31d3c2114fa33d99a6e82484b11
- https://git.kernel.org/stable/c/47038159c559824f4dbfb5b0d87b9b3416663372
- https://git.kernel.org/stable/c/779c2f10743fc021f2f0ebe2b188cadfb973c5e4
- https://git.kernel.org/stable/c/cf615b90a11a39a28e313be5e508e94bcde72016
- https://git.kernel.org/stable/c/e9bef62f1bb9fcb38223730657af20f4c6283c16
- https://git.kernel.org/stable/c/ea51fd96aca01381e8f1ac0c671a57b7619193bb