{"id":"CVE-2026-31542","state":"PUBLISHED","title":"x86/platform/uv: Handle deconfigured sockets","description":"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 structures.\n\nFix this by using NUMA_NO_NODE, allowing UV hub info structures to be\nallocated on valid nodes.","publishedAt":"2026-04-24T14:33:11.205Z","updatedAt":"2026-05-11T22:10:47.496Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"c51957601d32c0d195bce0b9345dfe93ef5728cc","versionType":"git"},{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"9956d4892e78812246336c7ea51f5aa62018049e","versionType":"git"},{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"79f0faf81d3bbbe5f07bf6892450d3740a1b290d","versionType":"git"},{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"c1cf2218d2fa40a49921a7460981e5faab26f04e","versionType":"git"},{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/apic/x2apic_uv_x.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.20","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.10","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/apic/x2apic_uv_x.c"]}],"references":["https://git.kernel.org/stable/c/c51957601d32c0d195bce0b9345dfe93ef5728cc","https://git.kernel.org/stable/c/9956d4892e78812246336c7ea51f5aa62018049e","https://git.kernel.org/stable/c/79f0faf81d3bbbe5f07bf6892450d3740a1b290d","https://git.kernel.org/stable/c/c1cf2218d2fa40a49921a7460981e5faab26f04e","https://git.kernel.org/stable/c/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31542.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31542","state":"PUBLISHED","datePublished":"2026-04-24T14:33:11.205Z","dateUpdated":"2026-05-11T22:10:47.496Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.114Z"},"containers":{"cna":{"title":"x86/platform/uv: Handle deconfigured sockets","descriptions":[{"lang":"en","value":"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 structures.\n\nFix this by using NUMA_NO_NODE, allowing UV hub info structures to be\nallocated on valid nodes."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"c51957601d32c0d195bce0b9345dfe93ef5728cc","versionType":"git"},{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"9956d4892e78812246336c7ea51f5aa62018049e","versionType":"git"},{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"79f0faf81d3bbbe5f07bf6892450d3740a1b290d","versionType":"git"},{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"c1cf2218d2fa40a49921a7460981e5faab26f04e","versionType":"git"},{"version":"8a50c58519271dd24ba760bb282875f6ad66ee71","status":"affected","lessThan":"1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/apic/x2apic_uv_x.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.20","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.10","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/apic/x2apic_uv_x.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:10:47.496Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.12.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.18.20"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.19.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}