CVE-2022-49746
dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init
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Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init If the function sdma_load_context() fails, the sdma_desc will be freed, but the allocated desc->bd is forgot to be freed. We already met the sdma_load_context() failure case and the log as below: [ 450.699064] imx-sdma 30bd0000.dma-controller: Timeout waiting for CH0 ready ... In this case, the desc->bd will not be freed without this change.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/1417f59ac0b02130ee56c0c50794b9b257be3d17
- https://git.kernel.org/stable/c/43acd767bd90c5d4172ce7fee5d9007a9a08dea9
- https://git.kernel.org/stable/c/80ee99e52936b2c04cc37b17a14b2ae2f9d282ac
- https://git.kernel.org/stable/c/bd0050b7ffa87c7b260d563646af612f4112a778
- https://git.kernel.org/stable/c/ce4745a6b8016fae74c95dcd457d4ceef7d98af1
References (6)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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