Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: xilinx_dma: Fix channel idle state management in AXIDMA and MCDMA interrupt handlers Fix a race condition in AXIDMA and MCDMA irq handlers where the channel could be incorrectly marked as idle and attempt spurious transfers when descriptors are still being processed. The issue occurs when: 1. Multiple descriptors are queued and active. 2. An interrupt fires after completing some descriptors. 3. xilinx_dma_complete_descriptor() moves completed descriptors to done_list. 4. Channel is marked idle and start_transfer() is called even though active_list still contains unprocessed descriptors. 5. This leads to premature transfer attempts and potential descriptor corruption or missed completions. Only mark the channel as idle and start new transfers when the active list is actually empty, ensuring proper channel state management and avoiding spurious transfer attempts.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c0bba3a99f0709c24c2c7ada7cb098966b1d791f to < 7f4b989d7d87381927b98d64492f8dcf979f57abaffectedc0bba3a99f0709c24c2c7ada7cb098966b1d791f to < 5459e02707b27a964ae72e028d3ff72a3b687c4aaffectedc0bba3a99f0709c24c2c7ada7cb098966b1d791f to < 425630e9eea1f9f8912b8c6abf01e0dab1e27917affectedc0bba3a99f0709c24c2c7ada7cb098966b1d791f to < fdaf297ab275c6efecac5e87669c31bc89b74297affectedc0bba3a99f0709c24c2c7ada7cb098966b1d791f to < c27d16fd2358b2fc3e1ffaca03afd11dc28630eaaffectedc0bba3a99f0709c24c2c7ada7cb098966b1d791f to < ec927657524be4438447944a58173c7baf7f2384affectedc0bba3a99f0709c24c2c7ada7cb098966b1d791f to < c3e943490ced0b9ad475844eda7661f6a9bcfb4aaffectedc0bba3a99f0709c24c2c7ada7cb098966b1d791f to < 0b6d055edb55ecadadf54e930c2b4fab76fa9a5aaffected
Linux Linux
Default version status: affected
4.7affected0 to < 4.7unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/7f4b989d7d87381927b98d64492f8dcf979f57ab ↗
- https://git.kernel.org/stable/c/5459e02707b27a964ae72e028d3ff72a3b687c4a ↗
- https://git.kernel.org/stable/c/425630e9eea1f9f8912b8c6abf01e0dab1e27917 ↗
- https://git.kernel.org/stable/c/fdaf297ab275c6efecac5e87669c31bc89b74297 ↗
- https://git.kernel.org/stable/c/c27d16fd2358b2fc3e1ffaca03afd11dc28630ea ↗
- https://git.kernel.org/stable/c/ec927657524be4438447944a58173c7baf7f2384 ↗
- https://git.kernel.org/stable/c/c3e943490ced0b9ad475844eda7661f6a9bcfb4a ↗
- https://git.kernel.org/stable/c/0b6d055edb55ecadadf54e930c2b4fab76fa9a5a ↗