CVE-2022-49650
N/A
N/A
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | dbad41e7bb5f4b9949ff5ea1d76c20711f326308 < 2f6ded79068cac8cff41d5d5632564165d98ee12 | affected |
| Linux | Linux | dbad41e7bb5f4b9949ff5ea1d76c20711f326308 < b702a1077b51fcb39507cc3bd39206f539319a96 | affected |
| Linux | Linux | dbad41e7bb5f4b9949ff5ea1d76c20711f326308 < 0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e | affected |
| Linux | Linux | 4.17 | affected |
| Linux | Linux | 0 < 4.17 | unaffected |
| Linux | Linux | 5.15.54 <= 5.15.* | unaffected |
| Linux | Linux | 5.18.11 <= 5.18.* | unaffected |
| Linux | Linux | 5.19 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12
- https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96
- https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e
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