CVE-2026-80902
Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA When terminating DMA transfers, active descriptors are not properly reclaimed. Only cyclic descriptors were handled, leaving non-cyclic descriptors and their LLI chains to be permanently leaked. Fix by using vchan_terminate_vdesc() which handles both cyclic and non-cyclic descriptors by adding them to desc_terminated queue for proper cleanup. Add pchan->desc != pchan->done check to prevent double-adding completed descriptors, which would corrupt the list.
How to fix
- Linux Linuxbb87440561eb72b47a2b848b5373b86433b247e6, 004a7a02982bed0a727a4ac7be400f00f353e7a2, b150f603083cc8b72b0cbf13ec3e91f85b4390a0, 27806fe7b9701af0963dcd510e30e7d0cc314c43, 1ccc5c059d067c5358682ad5352e7d7e9239ed9b, 9086b488f2737d5dcee86852b83f2059f1cdfabf, d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb, ab1150115e68a46b687eb38c1ab92782018c9f2c or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 555859308723d8d5b828304f5eb9281143fd86b5 ≤ v < bb87440561eb72b47a2b848b5373b86433b247e6, 555859308723d8d5b828304f5eb9281143fd86b5 ≤ v < 004a7a02982bed0a727a4ac7be400f00f353e7a2, 555859308723d8d5b828304f5eb9281143fd86b5 ≤ v < b150f603083cc8b72b0cbf13ec3e91f85b4390a0, 555859308723d8d5b828304f5eb9281143fd86b5 ≤ v < 27806fe7b9701af0963dcd510e30e7d0cc314c43, 555859308723d8d5b828304f5eb9281143fd86b5 ≤ v < 1ccc5c059d067c5358682ad5352e7d7e9239ed9b, 555859308723d8d5b828304f5eb9281143fd86b5 ≤ v < 9086b488f2737d5dcee86852b83f2059f1cdfabf, 555859308723d8d5b828304f5eb9281143fd86b5 ≤ v < d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb, 555859308723d8d5b828304f5eb9281143fd86b5 ≤ v < ab1150115e68a46b687eb38c1ab92782018c9f2c, 3.17 | bb87440561eb72b47a2b848b5373b86433b247e6, 004a7a02982bed0a727a4ac7be400f00f353e7a2, b150f603083cc8b72b0cbf13ec3e91f85b4390a0, 27806fe7b9701af0963dcd510e30e7d0cc314c43, 1ccc5c059d067c5358682ad5352e7d7e9239ed9b, 9086b488f2737d5dcee86852b83f2059f1cdfabf, d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb, ab1150115e68a46b687eb38c1ab92782018c9f2c |
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