CVE-2026-23135
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Publication date: 2026-02-14

Last updated on: 2026-03-17

Assigner: kernel.org

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.
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Meta Information
Published
2026-02-14
Last Modified
2026-03-17
Generated
2026-06-16
AI Q&A
2026-02-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-23135
EUVD
EUVD-2026-5902
Affected Vendors & Products
Showing 9 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 6.7 (inc) to 6.12.68 (exc)
linux linux_kernel From 6.13 (inc) to 6.18.8 (exc)
linux linux_kernel 6.19
linux linux_kernel From 6.3 (inc) to 6.6.122 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability relates to the Linux kernel's wifi driver for ath12k devices. The issue involves the improper use of pointers when freeing DMA (Direct Memory Access) coherent memory buffers. Specifically, dma_alloc_coherent() allocates a DMA mapped buffer and stores the addresses in unaligned fields, but the code was incorrectly using the aligned addresses when freeing the buffer with dma_free_coherent(). The fix ensures that the unaligned addresses are reused correctly when freeing the buffer.

Impact Analysis

Improper handling of DMA memory pointers can lead to memory corruption or instability in the wifi driver, potentially causing system crashes or unpredictable behavior in devices using the affected Linux kernel version with ath12k wifi hardware.

Compliance Impact

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