CVE-2026-64303
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.69% probability · 51th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/01980b5da56e573d62798d0ff6c86bcaa2b22cbePatch
- https://git.kernel.org/stable/c/808033d80d5c9f8adf7e8de9317389270ce13430Patch
- https://git.kernel.org/stable/c/9d000bdd250d649a11cd7f733175686877344582Patch
- https://git.kernel.org/stable/c/ad370d1c7a9a832f77b2341513cd31188c9443afPatch
- https://git.kernel.org/stable/c/af39a2698f69b584d14a00cffe0f51a2caa15337Patch
- https://git.kernel.org/stable/c/cce2063404b2341e7b2bbf85eddfcd70a31a0033Patch
- https://git.kernel.org/stable/c/d5c1060218a3749c8a18b36f8169d910fce20639Patch
- https://git.kernel.org/stable/c/e65505d91fa036a238968e4c10744244d1b968c4Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.