CVE-2026-31542

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8a50c58519271dd24ba760bb282875f6ad66ee71 < c51957601d32c0d195bce0b9345dfe93ef5728ccaffected
LinuxLinux8a50c58519271dd24ba760bb282875f6ad66ee71 < 9956d4892e78812246336c7ea51f5aa62018049eaffected
LinuxLinux8a50c58519271dd24ba760bb282875f6ad66ee71 < 79f0faf81d3bbbe5f07bf6892450d3740a1b290daffected
LinuxLinux8a50c58519271dd24ba760bb282875f6ad66ee71 < c1cf2218d2fa40a49921a7460981e5faab26f04eaffected
LinuxLinux8a50c58519271dd24ba760bb282875f6ad66ee71 < 1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3affected
LinuxLinux6.5affected
LinuxLinux0 < 6.5unaffected
LinuxLinux6.6.130 <= 6.6.*unaffected
LinuxLinux6.12.78 <= 6.12.*unaffected
LinuxLinux6.18.20 <= 6.18.*unaffected
LinuxLinux6.19.10 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References