CVE-2026-43149 Details
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.
A vulnerability in the Linux kernel's fsl_ucc_hdlc WAN driver can lead to improper memory management, potentially causing a privilege escalation. The issue arises because receive and transmit buffers are allocated as contiguous memory but are freed separately, leading to inconsistencies. This vulnerability affects several versions of the Linux kernel.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b | kernel.org | Patch |
| https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e | kernel.org | Patch |
| https://git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970 | kernel.org | Patch |
| https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b | kernel.org | Patch |
| https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d | kernel.org | Patch |
| https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.8, < 5.10.252 >= 5.11, < 5.15.202 >= 5.16, < 6.1.165 >= 6.2, < 6.6.128 >= 6.7, < 6.12.75 >= 6.13, < 6.18.16 >= 6.19, < 6.19.6 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 13, 2026 | Initial Analysis | [email protected] |
| May 6, 2026 | New CVE Received | kernel.org |