CVE-2022-49650

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49650
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e Patch
https://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12 Patch
https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.17:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.17:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.17:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*
History

23 Oct 2025, 12:10

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dmaengine: qcom: bam_dma: fix runtime PM underflow El commit dbad41e7bb5f ("dmaengine: qcom: bam_dma: check if the runtime pm enabled") causó llamadas pm_runtime_get/put() desequilibradas cuando el bam se controla de forma remota. Este commit lo revierte y simplemente habilita pm_runtime en todos los casos, las funciones clk_* ya simplemente dejan de funcionar cuando el reloj es NULL. También limpie un poco eliminando las comprobaciones nulas innecesarias de bamclk.
References () https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e - () https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e - Patch
References () https://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12 - () https://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12 - Patch
References () https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96 - () https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96 - Patch
CWE CWE-191
CPE cpe:2.3:o:linux:linux_kernel:4.17:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.17:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.17:rc7:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-10-23 12:10

NVD link : CVE-2022-49650

Mitre link : CVE-2022-49650

CVE.ORG link : CVE-2022-49650

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-191

Integer Underflow (Wrap or Wraparound)