CVE-2026-64303
spi: fsl-lpspi: terminate the RX channel on TX prepare failure path
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Description
In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: terminate the RX channel on TX prepare failure path When dmaengine_prep_slave_sg() fails for the TX channel, the error path terminates the TX DMA channel but leaves the RX channel running. Since the RX channel was already submitted and issued prior to preparing the TX descriptor, returning -EINVAL causes the SPI core to unmap the DMA buffers while the RX DMA engine continues writing to them, leading to potential memory corruption or use-after-free. Terminate the RX channel before returning on the TX prepare failure path.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/ad370d1c7a9a832f77b2341513cd31188c9443af
- https://git.kernel.org/stable/c/cce2063404b2341e7b2bbf85eddfcd70a31a0033
- https://git.kernel.org/stable/c/af39a2698f69b584d14a00cffe0f51a2caa15337
- https://git.kernel.org/stable/c/e65505d91fa036a238968e4c10744244d1b968c4
- https://git.kernel.org/stable/c/d5c1060218a3749c8a18b36f8169d910fce20639
References (8)
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