Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.8, < 5.10.252 |
References
- https://git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7bPatch
- https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938ePatch
- https://git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3Patch
- https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970Patch
- https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2bPatch
- https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4Patch
- https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8dPatch
- https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285Patch
FAQ
What is CVE-2026-43149?
CVE-2026-43149 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...
How severe is CVE-2026-43149?
CVE-2026-43149 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43149?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.