{"id":"CVE-2026-31542","title":"x86/platform/uv: Handle deconfigured sockets","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/platform/uv: Handle deconfigured sockets\n\nWhen a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes\na panic while allocating UV hub info struct…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < c51957601d32c0d195bce0b9345dfe93ef5728cc","Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < 9956d4892e78812246336c7ea51f5aa62018049e","Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < 79f0faf81d3bbbe5f07bf6892450d3740a1b290d","Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < c1cf2218d2fa40a49921a7460981e5faab26f04e","Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < 1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3","Linux 6.5"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:38:14.430650Z"},"published":"2026-04-24","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:45:07.098Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-31542","references":[{"url":"https://git.kernel.org/stable/c/c51957601d32c0d195bce0b9345dfe93ef5728cc"},{"url":"https://git.kernel.org/stable/c/9956d4892e78812246336c7ea51f5aa62018049e"},{"url":"https://git.kernel.org/stable/c/79f0faf81d3bbbe5f07bf6892450d3740a1b290d"},{"url":"https://git.kernel.org/stable/c/c1cf2218d2fa40a49921a7460981e5faab26f04e"},{"url":"https://git.kernel.org/stable/c/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3"}],"tags":["cve.org"],"epss":0.00122,"epssPercentile":0.01981,"ingestedAt":"2026-11-05T23:41:31.974Z","slug":"CVE-2026-31542","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nx86/platform/uv: Handle deconfigured sockets\n\nWhen a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes\na panic while allocating UV hub info structures.\n\nFix this by using NUMA_NO_NODE, allowing UV hub info structures to be\nallocated on valid nodes.\n\n## Affected\n\n- `Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < c51957601d32c0d195bce0b9345dfe93ef5728cc`\n- `Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < 9956d4892e78812246336c7ea51f5aa62018049e`\n- `Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < 79f0faf81d3bbbe5f07bf6892450d3740a1b290d`\n- `Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < c1cf2218d2fa40a49921a7460981e5faab26f04e`\n- `Linux >= 8a50c58519271dd24ba760bb282875f6ad66ee71 < 1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3`\n- `Linux 6.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}