CVE-2026-43457 Details
Description
In the Linux kernel, the following vulnerability has been resolved: mctp: i2c: fix skb memory leak in receive path When 'midev->allow_rx' is false, the newly allocated skb isn't consumed by netif_rx(), it needs to free the skb directly.
A memory leak vulnerability has been identified in the Linux kernel's MCTP I2C binding driver. When the 'allow_rx' flag is false, newly allocated socket buffers (SKBs) are not properly handled by the network stack, leading to a memory leak. The SKBs need to be freed manually, but this is not done in the current implementation.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability. Instructions for downloading the patched version can be found in the Linux kernel Git repository.
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/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb | kernel.org | Patch |
| https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25 | kernel.org | Patch |
| https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d | kernel.org | Patch |
| https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f | kernel.org | Patch |
| https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.18, < 6.1.167 >= 6.2, < 6.6.130 >= 6.7, < 6.12.78 >= 6.13, < 6.18.19 >= 6.19, < 6.19.9 7.0 rc1 7.0 rc2 7.0 rc3 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 21, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | New CVE Received | kernel.org |