CVE-2026-80902
dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.17
References 8
git.kernel.org
- stable/c/bb87440561eb72b47a2b848b5373b86433b247e6
- stable/c/004a7a02982bed0a727a4ac7be400f00f353e7a2
- stable/c/b150f603083cc8b72b0cbf13ec3e91f85b4390a0
- stable/c/27806fe7b9701af0963dcd510e30e7d0cc314c43
- stable/c/1ccc5c059d067c5358682ad5352e7d7e9239ed9b
- stable/c/9086b488f2737d5dcee86852b83f2059f1cdfabf
- stable/c/d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb
- stable/c/ab1150115e68a46b687eb38c1ab92782018c9f2c