CVE-2022-49650
MediumIn 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.
CVSS 3.1 score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness type
CWE-191CVE-2022-49650 is classified as CWE-191
See CWE-191 on MITRE CWE for full details on this weakness type.
Affected versions
Linux kernel versions
4.17
and later are affected. Fixed in
5.15.54,
5.18.11,
5.19
and their respective stable series.
References
The following references provide additional information about CVE-2022-49650 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e
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PatchKernel patch commithttps://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12
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PatchKernel patch commithttps://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96
Frequently asked questions
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What is CVE-2022-49650?
CVE-2022-49650 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.17 onward and has been patched in 5.15.54, 5.18.11 and 5.19. CVE-2022-49650 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2022-49650?
CVE-2022-49650 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2022-49650?
Yes — CVE-2022-49650 has been patched. Fixed versions include 5.15.54, 5.18.11 and 5.19. If you are running Linux kernel 4.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-49650 actively exploited?
No — CVE-2022-49650 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.