CVE-2026-43149: Linux kernel · net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 11 Nov 2026, 22:48 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 6 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
- git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970 (opens in a new tab)
- git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4 (opens in a new tab)
- git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b (opens in a new tab)
- git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e (opens in a new tab)
- git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b (opens in a new tab)
- git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285 (opens in a new tab)
- git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d (opens in a new tab)
- git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3 (opens in a new tab)