What’s Vulnerable › Vulnerabilities

CVE-2022-49128: drm/bridge: Add missing pm_runtime_put_sync

• 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/bridge: Add missing pm_runtime_put_sync pm_runtime_get_sync() will increase the rumtime PM counter even when it returns an error. Thus a pairing decrement is needed to prevent refcount leak. Fix this by replacing this API with pm_runtime_resume_and_get(), which will not change the runtime PM counter on error. Besides, a matching decrement is needed on the error handling path to keep the counter balanced.

Affected products

• Linux kernel: before 5.15.34; from 5.16 before 5.16.20; from 5.17 before 5.17.3 — fixed in 5.15.34, 5.16.20, 5.17.3

How to fix

Upgrade to a fixed version: Linux kernel 5.15.34, 5.16.20, 5.17.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/46f47807738441e354873546dde0b000106c068a
• https://git.kernel.org/stable/c/792533e54cd6e89191798ccd1abd590c62b9077e
• https://git.kernel.org/stable/c/9df80dc738926a2ea4bd1ce5993c3d0f4b0e855c
• https://git.kernel.org/stable/c/ff13c90d7f7ab606b37be6d15140d19013d6736c

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