CVE-2026-64234 is a vulnerability in Linux Kernel
Published on July 24, 2026
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.
Products Associated with CVE-2026-64234
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Affected Versions
Linux:- Version 3c6a483275f47a2ef7119309ad3d791c10cf30da and below 760df81763b391bb5f0dcb0b7597b736da753ae4 is affected.
- Version 3c6a483275f47a2ef7119309ad3d791c10cf30da and below 5f2e2a240dc1846e049bc67e9c3cdf5b031d08bf is affected.
- Version 3c6a483275f47a2ef7119309ad3d791c10cf30da and below daea997bb244aeb50cbb2e5e075fb446a6cf068f is affected.
- Version 3c6a483275f47a2ef7119309ad3d791c10cf30da and below 6dd5c0ea139b586ad5a091677056dafd405cfe82 is affected.
- Version 3c6a483275f47a2ef7119309ad3d791c10cf30da and below d846df2dfbc2469a688833b4cc4f8aa80672bde8 is affected.
- Version 3c6a483275f47a2ef7119309ad3d791c10cf30da and below 66f8bfea055b23719b4fd6ce207c44de37d82a59 is affected.
- Version 3c6a483275f47a2ef7119309ad3d791c10cf30da and below d8d53a343ebe74274ca17b1e1993042e99f8c863 is affected.
- Version 3c6a483275f47a2ef7119309ad3d791c10cf30da and below 6fe472c1bbbe238e91141f7cabc1226e96a60d43 is affected.
- Version 2.6.38 is affected.
- Before 2.6.38 is unaffected.
- Version 5.10.259, <= 5.10.* is unaffected.
- Version 5.15.210, <= 5.15.* is unaffected.
- Version 6.1.176, <= 6.1.* is unaffected.
- Version 6.6.143, <= 6.6.* is unaffected.
- Version 6.12.93, <= 6.12.* is unaffected.
- Version 6.18.35, <= 6.18.* is unaffected.
- Version 7.0.12, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.