What’s Vulnerable › Vulnerabilities

CVE-2026-80902: dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-04 · updated 2026-09-04

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.

Affected products

• Linux kernel: 3.17 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/004a7a02982bed0a727a4ac7be400f00f353e7a2
• https://git.kernel.org/stable/c/1ccc5c059d067c5358682ad5352e7d7e9239ed9b
• https://git.kernel.org/stable/c/27806fe7b9701af0963dcd510e30e7d0cc314c43
• https://git.kernel.org/stable/c/9086b488f2737d5dcee86852b83f2059f1cdfabf
• https://git.kernel.org/stable/c/ab1150115e68a46b687eb38c1ab92782018c9f2c
• https://git.kernel.org/stable/c/b150f603083cc8b72b0cbf13ec3e91f85b4390a0
• https://git.kernel.org/stable/c/bb87440561eb72b47a2b848b5373b86433b247e6
• https://git.kernel.org/stable/c/d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb

Get alerted when CVE-2026-80902 or the next vulnerability affects your stack