What’s Vulnerable › Vulnerabilities

CVE-2026-23135: wifi: ath12k: fix dma_free_coherent() pointer

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-14 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix dma_free_coherent() pointer dma_alloc_coherent() allocates a DMA mapped buffer and stores the addresses in XXX_unaligned fields. Those should be reused when freeing the buffer rather than the aligned addresses.

Affected products

• Linux kernel: from 6.3 before 6.6.122; from 6.7 before 6.12.68; from 6.13 before 6.18.8; 6.19-rc1, 6.19-rc2, 6.19-rc3, 6.19-rc4, 6.19-rc5, 6.19-rc6 — fixed in 6.12.68, 6.18.8, 6.6.122

How to fix

Upgrade to a fixed version: Linux kernel 6.12.68, 6.18.8, 6.6.122. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/24585a13c41ea7253ee59aac74441fb570f5824a
• https://git.kernel.org/stable/c/36e0bc5e8b282564906fca636c4ebc99814de4e7
• https://git.kernel.org/stable/c/4846b32be324f4dd3653f38a3f69c049543d52ae
• https://git.kernel.org/stable/c/bb97131fbf9b708dd9616ac2bdc793ad102b5c48

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