tty: serial: pch_uart: add check for dma_alloc_coherent()
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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
- https://git.kernel.org/stable/c/d846df2dfbc2469a688833b4cc4f8aa80672bde8
- https://git.kernel.org/stable/c/d8d53a343ebe74274ca17b1e1993042e99f8c863
- https://git.kernel.org/stable/c/daea997bb244aeb50cbb2e5e075fb446a6cf068f
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64234.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-64234