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CVE-2022-49693: drm/msm/mdp4: Fix refcount leak in mdp4_modeset_init_intf

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/mdp4: Fix refcount leak in mdp4_modeset_init_intf of_graph_get_remote_node() returns remote device node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. Patchwork: https://patchwork.freedesktop.org/patch/488473/

Affected products

• Linux kernel: from 4.12 before 5.4.202; from 5.5 before 5.10.127; from 5.11 before 5.15.51; from 5.16 before 5.18.8; 5.19-rc1, 5.19-rc2, 5.19-rc3 — fixed in 5.10.127, 5.15.51, 5.18.8, 5.4.202

How to fix

Upgrade to a fixed version: Linux kernel 5.10.127, 5.15.51, 5.18.8, 5.4.202. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3c39a17197733bc37786ed68c83267c2f491840b
• https://git.kernel.org/stable/c/b9cc4598607cb7f7eae5c75fc1e3209cd52ff5e0
• https://git.kernel.org/stable/c/d1592d3e362cc59b29f15019707b16c695d70ca3
• https://git.kernel.org/stable/c/d16a4339825e64f9ddcdff5277982d640bae933b
• https://git.kernel.org/stable/c/d607da76fd2b1cf1d377af9d9b7c6f8fecbb0e1d

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