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CVE-2026-53066: drm/sun4i: backend: fix error pointer dereference

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-24 · updated 2026-07-21
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: backend: fix error pointer dereference The function drm_atomic_get_plane_state() can return an error pointer and is not checked for it. Add error pointer check. Detected by Smatch: drivers/gpu/drm/sun4i/sun4i_backend.c:496 sun4i_backend_atomic_check() error: 'plane_state' dereferencing possible ERR_PTR()

Affected products

• Linux kernel: from 4.17 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10 — fixed in 6.1.175, 6.12.91, 6.18.33, 6.6.141, 7.0.10

How to fix

Upgrade to a fixed version: Linux kernel 6.1.175, 6.12.91, 6.18.33, 6.6.141. Check the vendor advisory for mitigations.

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

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