CVE-2026-43149
net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean()
Description
In the Linux kernel, the following vulnerability has been resolved: net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean() The priv->rx_buffer and priv->tx_buffer are alloc'd together as contiguous buffers in uhdlc_init() but freed as two buffers in uhdlc_memclean(). Change the cleanup to only call dma_free_coherent() once on the whole buffer.
INFO
Published Date :
May 6, 2026, 12:16 p.m.
Last Modified :
May 6, 2026, 1:07 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the kernel patch for net: wan/fsl_ucc_hdlc.
- Ensure dma_free_coherent is called only once.
- Modify uhdlc_memclean to free the entire buffer.
References to Advisories, Solutions, and Tools
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CVE-2026-43149.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43149 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43149
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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CVE-2026-43149 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 06, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean() The priv->rx_buffer and priv->tx_buffer are alloc'd together as contiguous buffers in uhdlc_init() but freed as two buffers in uhdlc_memclean(). Change the cleanup to only call dma_free_coherent() once on the whole buffer. Added Reference https://git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b Added Reference https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e Added Reference https://git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3 Added Reference https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970 Added Reference https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b Added Reference https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4 Added Reference https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d Added Reference https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285