CVE-2026-43149

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc19b6d246a35627c3a69b2fa6bdece212b48214b < 6496fb830cbb741d831225cc4e7e5601c6e42970affected
LinuxLinuxc19b6d246a35627c3a69b2fa6bdece212b48214b < ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4affected
LinuxLinuxc19b6d246a35627c3a69b2fa6bdece212b48214b < 011ae5dd84dc9f05eb9b8e1adff44252ac776e7baffected
LinuxLinuxc19b6d246a35627c3a69b2fa6bdece212b48214b < 0f85a9655445e67bb0238cfc983d7c383b54938eaffected
LinuxLinuxc19b6d246a35627c3a69b2fa6bdece212b48214b < 84b932bc9899d43e5829e6cf088b72d73a922b2baffected
LinuxLinuxc19b6d246a35627c3a69b2fa6bdece212b48214b < d8a522085d09b30aba1016daf1dddac37c0f0285affected
LinuxLinuxc19b6d246a35627c3a69b2fa6bdece212b48214b < d68994e37ac3b285692559776e0279a88a3b5f8daffected
LinuxLinuxc19b6d246a35627c3a69b2fa6bdece212b48214b < 36bd7d5deef936c4e1e3cd341598140e5c14c1d3affected
LinuxLinux4.8affected
LinuxLinux0 < 4.8unaffected
LinuxLinux5.10.252 <= 5.10.*unaffected
LinuxLinux5.15.202 <= 5.15.*unaffected
LinuxLinux6.1.165 <= 6.1.*unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References