{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89438","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.703Z","datePublished":"2026-09-11T19:43:08.077Z","dateUpdated":"2026-09-14T11:59:50.282Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-14T11:59:50.282Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: ISST: Validate logical CPU id and clos id\n\nValidate max CLOS ID and logical CPU ID for core power feature.\nReject any clos level or logical CPU number greater than the\nsupported maximum. These are used to calculate MMIO offset."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c"],"versions":[{"version":"12a7d2cb811dd8a884dea088a2701fcb8d00136e","lessThan":"0d601126c7afda9bb94dfecc8b2c0a16f20d76cb","status":"affected","versionType":"git"},{"version":"12a7d2cb811dd8a884dea088a2701fcb8d00136e","lessThan":"c9ee2770eb95ba316a56d776b2b66666b70c194b","status":"affected","versionType":"git"},{"version":"12a7d2cb811dd8a884dea088a2701fcb8d00136e","lessThan":"5b032e1dda486ca41d10536bd195bd8a559af1e2","status":"affected","versionType":"git"},{"version":"12a7d2cb811dd8a884dea088a2701fcb8d00136e","lessThan":"82d4afadb02fb4d7d7bb9230900904c10e49ec87","status":"affected","versionType":"git"},{"version":"12a7d2cb811dd8a884dea088a2701fcb8d00136e","lessThan":"124e2dbabe460c2a6e7440f4ad8af560131295c9","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.109","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.50","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.4","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0d601126c7afda9bb94dfecc8b2c0a16f20d76cb"},{"url":"https://git.kernel.org/stable/c/c9ee2770eb95ba316a56d776b2b66666b70c194b"},{"url":"https://git.kernel.org/stable/c/5b032e1dda486ca41d10536bd195bd8a559af1e2"},{"url":"https://git.kernel.org/stable/c/82d4afadb02fb4d7d7bb9230900904c10e49ec87"},{"url":"https://git.kernel.org/stable/c/124e2dbabe460c2a6e7440f4ad8af560131295c9"}],"title":"platform/x86: ISST: Validate logical CPU id and clos id","x_generator":{"engine":"bippy-1.2.0"}}}}