CVE-2026-64234
tty: serial: pch_uart: add check for dma_alloc_coherent()
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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.
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/760df81763b391bb5f0dcb0b7597b736da753ae4
- https://git.kernel.org/stable/c/5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf
- https://git.kernel.org/stable/c/daea997bb244aeb50cbb2e5e075fb446a6cf068f
- https://git.kernel.org/stable/c/6dd5c0ea139b586ad5a091677056dafd405cfe82
- https://git.kernel.org/stable/c/d846df2dfbc2469a688833b4cc4f8aa80672bde8
References (8)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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