CVE-2026-43239 Details
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: prevent races in ->query_interfaces() It was possible for two query interface works to be concurrently trying to update the interfaces. Prevent this by checking and updating iface_last_update under iface_lock.
A race condition vulnerability has been identified in the Linux kernel's SMB client component, specifically within the query interfaces handling. This issue allows two concurrent operations to attempt to update network interface information simultaneously, potentially leading to inconsistent states. The vulnerability affects the stable versions of the Linux kernel.
Users can upgrade to the latest stable version of the Linux kernel, where this vulnerability has been addressed. Instructions for downloading the updated kernel can be found on the official Linux kernel website.
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/6287eefaf21ec805d42f941bd368018cf397a7f5 | kernel.org | Patch |
| https://git.kernel.org/stable/c/76cc4faba0343c6db945b8dc75425b33d633e1b8 | kernel.org | Patch |
| https://git.kernel.org/stable/c/93e8e3ee165ae4609a1222b516b573837103d2c3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ab6564f416a6eaf1199200b6100952407b438f7d | kernel.org | Patch |
| https://git.kernel.org/stable/c/c3c06e42e1527716c54f3ad2ced6a034b5f3a489 | 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 | >= 5.19.1, < 6.6.128 >= 6.7, < 6.12.75 >= 6.13, < 6.18.16 >= 6.19, < 6.19.6 5.19 - 5.19 rc4 5.19 rc5 5.19 rc6 5.19 rc7 5.19 rc8 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 12, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | CVE Modified | kernel.org |
| May 6, 2026 | New CVE Received | kernel.org |