CVE-2026-64234
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().
Does this matter?
Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.11% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/5f2e2a240dc1846e049bc67e9c3cdf5b031d08bfPatch
- https://git.kernel.org/stable/c/66f8bfea055b23719b4fd6ce207c44de37d82a59Patch
- https://git.kernel.org/stable/c/6dd5c0ea139b586ad5a091677056dafd405cfe82Patch
- https://git.kernel.org/stable/c/6fe472c1bbbe238e91141f7cabc1226e96a60d43Patch
- https://git.kernel.org/stable/c/760df81763b391bb5f0dcb0b7597b736da753ae4Patch
- https://git.kernel.org/stable/c/d846df2dfbc2469a688833b4cc4f8aa80672bde8Patch
- https://git.kernel.org/stable/c/d8d53a343ebe74274ca17b1e1993042e99f8c863Patch
- https://git.kernel.org/stable/c/daea997bb244aeb50cbb2e5e075fb446a6cf068fPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.