CVE-2022-49650

Published: Feb 26, 2025Modified: Jun 17, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: qcom: bam_dma: fix runtime PM underflow Commit dbad41e7bb5f ("dmaengine: qcom: bam_dma: check if the runtime pm enabled") caused unbalanced pm_runtime_get/put() calls when the bam is controlled remotely. This commit reverts it and just enables pm_runtime in all cases, the clk_* functions already just nop when the clock is NULL. Also clean up a bit by removing unnecessary bamclk null checks.

Affected (10)

Products: Linux: Linux Kernel

Linux

1 product

Linux Kernel

Configuration A

10 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	4.17.1 ≤ version < 5.15.54
Linux Linux Kernel	5.16 ≤ version < 5.18.11
Linux Linux Kernel	Version 4.17
Linux Linux Kernel	Version 4.17 rc6
Linux Linux Kernel	Version 4.17 rc7
Linux Linux Kernel	Version 5.19 rc1
Linux Linux Kernel	Version 5.19 rc2
Linux Linux Kernel	Version 5.19 rc3
Linux Linux Kernel	Version 5.19 rc4
Linux Linux Kernel	Version 5.19 rc5

Related CWEs

CWE-191

Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

References (3)

https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Patch

https://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Patch

https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Patch

Timeline

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