CVE-2022-48774: dmaengine: ptdma: Fix the error handling path in pt_core_init()

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: 2024-07-16 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: ptdma: Fix the error handling path in pt_core_init() In order to free resources correctly in the error handling path of pt_core_init(), 2 goto's have to be switched. Otherwise, some resources will leak and we will try to release things that have not been allocated yet. Also move a dev_err() to a place where it is more meaningful.

Affected products

Linux kernel: from 5.15 before 5.15.25; from 5.16 before 5.16.11; 5.17-rc1, 5.17-rc2, 5.17-rc3, 5.17-rc4 — fixed in 5.15.25, 5.16.11

How to fix

Upgrade to a fixed version: Linux kernel 5.15.25, 5.16.11. Check the vendor advisory for mitigations.

References

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