{"id":"CVE-2026-81018","state":"PUBLISHED","title":"platform/x86: think-lmi: Free system certificate signatures","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: think-lmi: Free system certificate signatures\n\nMulti-certificate support also allows the system authentication object\nto store ->signature and ->save_signature, which leak when the driver is\nremoved. Free the signatures to avoid leaking memory.","publishedAt":"2026-09-11T19:43:06.080Z","updatedAt":"2026-10-19T08:46:43.567Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5dcb5ef125907d09806509a9db8c6705041e0026","status":"affected","lessThan":"9c28adde051fe76a7754856d0a414ab89adcaa4d","versionType":"git"},{"version":"5dcb5ef125907d09806509a9db8c6705041e0026","status":"affected","lessThan":"abbcc0354108cf47a6055b951182bf73520d0363","versionType":"git"},{"version":"5dcb5ef125907d09806509a9db8c6705041e0026","status":"affected","lessThan":"abca989604f60fe29d7170431f819e28ec7d868a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/lenovo/think-lmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/lenovo/think-lmi.c"]}],"references":["https://git.kernel.org/stable/c/9c28adde051fe76a7754856d0a414ab89adcaa4d","https://git.kernel.org/stable/c/abbcc0354108cf47a6055b951182bf73520d0363","https://git.kernel.org/stable/c/abca989604f60fe29d7170431f819e28ec7d868a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/81xxx/CVE-2026-81018.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-81018","state":"PUBLISHED","datePublished":"2026-09-11T19:43:06.080Z","dateUpdated":"2026-10-19T08:46:43.567Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.813Z"},"containers":{"cna":{"title":"platform/x86: think-lmi: Free system certificate signatures","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: think-lmi: Free system certificate signatures\n\nMulti-certificate support also allows the system authentication object\nto store ->signature and ->save_signature, which leak when the driver is\nremoved. Free the signatures to avoid leaking memory."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5dcb5ef125907d09806509a9db8c6705041e0026","status":"affected","lessThan":"9c28adde051fe76a7754856d0a414ab89adcaa4d","versionType":"git"},{"version":"5dcb5ef125907d09806509a9db8c6705041e0026","status":"affected","lessThan":"abbcc0354108cf47a6055b951182bf73520d0363","versionType":"git"},{"version":"5dcb5ef125907d09806509a9db8c6705041e0026","status":"affected","lessThan":"abca989604f60fe29d7170431f819e28ec7d868a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/lenovo/think-lmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/lenovo/think-lmi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/9c28adde051fe76a7754856d0a414ab89adcaa4d"},{"url":"https://git.kernel.org/stable/c/abbcc0354108cf47a6055b951182bf73520d0363"},{"url":"https://git.kernel.org/stable/c/abca989604f60fe29d7170431f819e28ec7d868a"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:46:43.567Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}