CVE-2026-80902

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    CVE-2026-80902

    Published: 4 Sept 2026Last Modified: 6 Sept 2026

    Summary: dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA

    Details: 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.

    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, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80902.json, https://nvd.nist.gov/vuln/detail/CVE-2026-80902, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 555859308723d8d5b828304f5eb9281143fd86b5
    Fixed -bb87440561eb72b47a2b848b5373b86433b247e6

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-80902 | CVE-DB