CVE-2026-64234

Description

In the Linux kernel, the following vulnerability has been resolved: tty: serial: pch_uart: add check for dma_alloc_coherent() Add a check for dma_alloc_coherent() failure to prevent a potential NULL pointer dereference in dma_handle_rx(). Properly release DMA channels and the PCI device reference using a goto ladder if the allocation fails.

References

• https://git.kernel.org/stable/c/5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf
• https://git.kernel.org/stable/c/66f8bfea055b23719b4fd6ce207c44de37d82a59
• https://git.kernel.org/stable/c/6dd5c0ea139b586ad5a091677056dafd405cfe82
• https://git.kernel.org/stable/c/6fe472c1bbbe238e91141f7cabc1226e96a60d43
• https://git.kernel.org/stable/c/760df81763b391bb5f0dcb0b7597b736da753ae4