CVE-2026-43149
Description
A flaw was found in the Linux kernel's fsl_ucc_hdlc module. The uhdlc_memclean() function incorrectly deallocates memory by calling dma_free_coherent() twice for buffers that were allocated as a single contiguous block. This improper memory handling may lead to a denial of service (DoS) or other unpredictable system behavior due to memory corruption.
Understanding the Weakness (CWE)
Availability,Integrity
Technical Impact: DoS: Crash, Exit, or Restart
Integrity
Technical Impact: Modify Memory; Modify Application Data
Depending on the type of resource and the expected API behavior, this could lead to memory corruption, data corruption, or execution path corruption.
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