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CVE-2023-53324: drm/msm/mdp5: Don't leak some plane state

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-16 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/mdp5: Don't leak some plane state Apparently no one noticed that mdp5 plane states leak like a sieve ever since we introduced plane_state->commit refcount a few years ago in 21a01abbe32a ("drm/atomic: Fix freeing connector/plane state too early by tracking commits, v3.") Fix it by using the right helpers. Patchwork: https://patchwork.freedesktop.org/patch/551236/

Affected products

• Linux kernel: from 4.15 before 4.19.295; from 4.20 before 5.4.257; from 5.5 before 5.10.195; from 5.11 before 5.15.132; from 5.16 before 6.1.53; from 6.2 before 6.4.16 — fixed in 4.19.295, 5.10.195, 5.15.132, 5.4.257, 6.1.53, 6.4.16

How to fix

Upgrade to a fixed version: Linux kernel 4.19.295, 5.10.195, 5.15.132, 5.4.257. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/12dfd02cbd1a678fbd66be0c2f79d5299c4921a9
• https://git.kernel.org/stable/c/2965015006ef18ca96d2eab9ebe6bca884c63291
• https://git.kernel.org/stable/c/5b0dd3a102f64996598bd1e8d8388848a7c561bc
• https://git.kernel.org/stable/c/7fc11a830b2eb07a0e3c6f917e5e636df6fc5d4c
• https://git.kernel.org/stable/c/815e42029f6e1e762898079f85546d6a0391ab95
• https://git.kernel.org/stable/c/b8a61df6f40448cf46611f7af05b00970d08d620
• https://git.kernel.org/stable/c/c0b1eee648702e04f1005d451f9689575b7f52ed
• https://git.kernel.org/stable/c/fd0ad3b2365c1c58aa5a761c18efc4817193beb6

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