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VulnerabilityPublished Updated

CVE-2026-43149: Linux kernel · net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 11 Nov 2026, 22:48 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

AI-suggested

A fix has been applied in the Linux kernel to correct the dma_free_coherent() call in uhdlc_memclean(). Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.

Description

A memory management issue in the Linux kernel's net: wan/fsl_ucc_hdlc driver was fixed by correcting the dma_free_coherent() call in the uhdlc_memclean() function. The vulnerability involved freeing a contiguous buffer as two separate buffers, which could lead to improper memory handling.

References

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