CVE-2026-64234

tty: serial: pch_uart: add check for dma_alloc_coherent()

State: Published
Severity: Not scored
Published: Jul 24, 2026
Updated: Jul 24, 2026
Reserved: Jul 19, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	3c6a483275f47a2ef7119309ad3d791c10cf30da to before 760df81763b391bb5f0dcb0b7597b736da753ae4Affected 3c6a483275f47a2ef7119309ad3d791c10cf30da to before 5f2e2a240dc1846e049bc67e9c3cdf5b031d08bfAffected 3c6a483275f47a2ef7119309ad3d791c10cf30da to before daea997bb244aeb50cbb2e5e075fb446a6cf068fAffected 3c6a483275f47a2ef7119309ad3d791c10cf30da to before 6dd5c0ea139b586ad5a091677056dafd405cfe82Affected 3c6a483275f47a2ef7119309ad3d791c10cf30da to before d846df2dfbc2469a688833b4cc4f8aa80672bde8Affected 3c6a483275f47a2ef7119309ad3d791c10cf30da to before 66f8bfea055b23719b4fd6ce207c44de37d82a59Affected 3c6a483275f47a2ef7119309ad3d791c10cf30da to before d8d53a343ebe74274ca17b1e1993042e99f8c863Affected 3c6a483275f47a2ef7119309ad3d791c10cf30da to before 6fe472c1bbbe238e91141f7cabc1226e96a60d43Affected
LinuxLinux	2.6.38Affected before 2.6.38Not affected 5.10.259 through 5.10.Not affected 5.15.210 through 5.15.Not affected 6.1.176 through 6.1.Not affected 6.6.143 through 6.6.Not affected 6.12.93 through 6.12.Not affected 6.18.35 through 6.18.Not affected 7.0.12 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

3c6a483275f47a2ef7119309ad3d791c10cf30da to before 760df81763b391bb5f0dcb0b7597b736da753ae4Affected
3c6a483275f47a2ef7119309ad3d791c10cf30da to before 5f2e2a240dc1846e049bc67e9c3cdf5b031d08bfAffected
3c6a483275f47a2ef7119309ad3d791c10cf30da to before daea997bb244aeb50cbb2e5e075fb446a6cf068fAffected
3c6a483275f47a2ef7119309ad3d791c10cf30da to before 6dd5c0ea139b586ad5a091677056dafd405cfe82Affected
3c6a483275f47a2ef7119309ad3d791c10cf30da to before d846df2dfbc2469a688833b4cc4f8aa80672bde8Affected
3c6a483275f47a2ef7119309ad3d791c10cf30da to before 66f8bfea055b23719b4fd6ce207c44de37d82a59Affected
3c6a483275f47a2ef7119309ad3d791c10cf30da to before d8d53a343ebe74274ca17b1e1993042e99f8c863Affected
3c6a483275f47a2ef7119309ad3d791c10cf30da to before 6fe472c1bbbe238e91141f7cabc1226e96a60d43Affected

LinuxLinux

2.6.38Affected
before 2.6.38Not affected
5.10.259 through 5.10.*Not affected
5.15.210 through 5.15.*Not affected
6.1.176 through 6.1.*Not affected
6.6.143 through 6.6.*Not affected
6.12.93 through 6.12.*Not affected
6.18.35 through 6.18.*Not affected
7.0.12 through 7.0.*Not affected
7.1 and laterNot affected

References

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