CVE-2022-49746: dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init
First published: Thu Mar 27 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | <4.19.272 | |
| Linux Kernel | >=4.20<5.4.231 | |
| Linux Kernel | >=5.5<5.10.167 | |
| Linux Kernel | >=5.11<5.15.92 | |
| Linux Kernel | >=5.16<6.1.10 | |
| Linux Kernel | =6.2-rc1 | |
| Linux Kernel | =6.2-rc2 | |
| Linux Kernel | =6.2-rc3 | |
| Linux Kernel | =6.2-rc4 |
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Reference Links
- https://git.kernel.org/stable/c/80ee99e52936b2c04cc37b17a14b2ae2f9d282ac
- https://git.kernel.org/stable/c/dbe634ce824329d8f14079c3e9f8f11670894bec
- https://git.kernel.org/stable/c/bd0050b7ffa87c7b260d563646af612f4112a778
- https://git.kernel.org/stable/c/43acd767bd90c5d4172ce7fee5d9007a9a08dea9
- https://git.kernel.org/stable/c/ce4745a6b8016fae74c95dcd457d4ceef7d98af1
- https://git.kernel.org/stable/c/1417f59ac0b02130ee56c0c50794b9b257be3d17
Frequently Asked Questions
What is the severity of CVE-2022-49746?
CVE-2022-49746 has a severity rating that may impact the system's memory management.
How do I fix CVE-2022-49746?
To resolve CVE-2022-49746, update the Linux kernel to the latest version where the vulnerability has been mitigated.
What type of vulnerability is CVE-2022-49746?
CVE-2022-49746 is a memory leak vulnerability within the Linux kernel's DMA engine.
What components are affected by CVE-2022-49746?
CVE-2022-49746 affects the imx-sdma component of the Linux kernel.
What versions of the Linux kernel are affected by CVE-2022-49746?
Specific versions of the Linux kernel that utilize the imx-sdma DMA engine may be affected, and it’s advisable to check for updates.
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