CVE-2026-90405
Description
In the Linux kernel, the following vulnerability has been resolved: media: stm32: dcmi: fix some error handling bugs in probe() There are a few issues here: 1) After we assign: chan = dma_request_chan(&pdev->dev, "tx"); Then the error paths need to clean up before returning. The first error path does a direct return. 2) The error paths check "dcmi->mdma_chan" but that is not assigned until later so it results in memory leaks. Test "mdma_chan" instead. 3) The error handling calls dma_release_channel(dcmi->dma_chan) before "dcmi->dma_chan" has been assigned which leads to a NULL pointer dereference. Use the "chan" variable instead. I also moved the call to dma_release_channel() after the call to dma_release_channel() so it mirrors the allocation code better.
How to fix
- Linux Linux4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659, f1d1ed39ced825615aeac61f0b6a322178756632 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | bc901885fae0a0273288666609d143e960b6ad3a ≤ v < 4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659, bc901885fae0a0273288666609d143e960b6ad3a ≤ v < f1d1ed39ced825615aeac61f0b6a322178756632, 7.1 | 4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659, f1d1ed39ced825615aeac61f0b6a322178756632 |
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