CVE-2026-31542 Details
Description
In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Handle deconfigured sockets When a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes a panic while allocating UV hub info structures. Fix this by using NUMA_NO_NODE, allowing UV hub info structures to be allocated on valid nodes.
A vulnerability in the Linux kernel's handling of deconfigured sockets on x86 platforms can lead to a system panic. When a socket is deconfigured, it is represented as SOCK_EMPTY, which causes a crash during the allocation of UV hub information structures. This issue has been addressed by modifying the allocation process to use NUMA_NO_NODE, enabling the UV hub information to be allocated on valid nodes.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for upgrading the kernel can be found in the official Linux documentation.
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/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/79f0faf81d3bbbe5f07bf6892450d3740a1b290d | kernel.org | Patch |
| https://git.kernel.org/stable/c/9956d4892e78812246336c7ea51f5aa62018049e | kernel.org | Patch |
| https://git.kernel.org/stable/c/c1cf2218d2fa40a49921a7460981e5faab26f04e | kernel.org | Patch |
| https://git.kernel.org/stable/c/c51957601d32c0d195bce0b9345dfe93ef5728cc | 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 | >= 6.5, < 6.6.130 >= 6.7, < 6.12.78 >= 6.13, < 6.18.20 >= 6.19, < 6.19.10 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 28, 2026 | Initial Analysis | [email protected] |
| Apr 24, 2026 | New CVE Received | kernel.org |