{"id":"CVE-2026-90273","state":"PUBLISHED","title":"coresight: etm4x: missing cscfg_csdev_disable_active_config() in perf enable","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: etm4x: missing cscfg_csdev_disable_active_config() in perf enable\n\nIn the perf enable path, there are missing cases where\ncscfg_csdev_disable_active_config() is not called:\n\n  - Branch broadcast is selected but not supported by the hardware\n  - etm4_enable_hw() fails\n\nThis can lead to a leak of config_desc->active_cnt.\nFix this by properly calling cscfg_csdev_disable_active_config()\nin these error paths.","publishedAt":"2026-09-17T16:08:06.638Z","updatedAt":"2026-10-30T12:35:02.543Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"f097b6969e9961365358fc5ba5892db2f284f020","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"ba63c62d4252f6bc58fd2a567075c72d03332562","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"26f9e89bad5a7e3005d3dc97a2e2fa6d6b2b8bb6","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"d5f3dae82705d9388434892915008da3bb83c4ba","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"7e4f2702bbadbde887a5d8897297720a7f037ee5","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"0a47f0be6557b4a851addd430383a4dc7ee08752","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwtracing/coresight/coresight-etm4x-core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","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/hwtracing/coresight/coresight-etm4x-core.c"]}],"references":["https://git.kernel.org/stable/c/f097b6969e9961365358fc5ba5892db2f284f020","https://git.kernel.org/stable/c/ba63c62d4252f6bc58fd2a567075c72d03332562","https://git.kernel.org/stable/c/26f9e89bad5a7e3005d3dc97a2e2fa6d6b2b8bb6","https://git.kernel.org/stable/c/d5f3dae82705d9388434892915008da3bb83c4ba","https://git.kernel.org/stable/c/7e4f2702bbadbde887a5d8897297720a7f037ee5","https://git.kernel.org/stable/c/0a47f0be6557b4a851addd430383a4dc7ee08752"],"weaknesses":[],"ingestedAt":"2026-10-30T12:54:04.478Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90273.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90273","state":"PUBLISHED","datePublished":"2026-09-17T16:08:06.638Z","dateUpdated":"2026-10-30T12:35:02.543Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.797Z"},"containers":{"cna":{"title":"coresight: etm4x: missing cscfg_csdev_disable_active_config() in perf enable","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: etm4x: missing cscfg_csdev_disable_active_config() in perf enable\n\nIn the perf enable path, there are missing cases where\ncscfg_csdev_disable_active_config() is not called:\n\n  - Branch broadcast is selected but not supported by the hardware\n  - etm4_enable_hw() fails\n\nThis can lead to a leak of config_desc->active_cnt.\nFix this by properly calling cscfg_csdev_disable_active_config()\nin these error paths."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"f097b6969e9961365358fc5ba5892db2f284f020","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"ba63c62d4252f6bc58fd2a567075c72d03332562","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"26f9e89bad5a7e3005d3dc97a2e2fa6d6b2b8bb6","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"d5f3dae82705d9388434892915008da3bb83c4ba","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"7e4f2702bbadbde887a5d8897297720a7f037ee5","versionType":"git"},{"version":"810ac401db1fe432020d7936a199591000de8279","status":"affected","lessThan":"0a47f0be6557b4a851addd430383a4dc7ee08752","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwtracing/coresight/coresight-etm4x-core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","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/hwtracing/coresight/coresight-etm4x-core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f097b6969e9961365358fc5ba5892db2f284f020"},{"url":"https://git.kernel.org/stable/c/ba63c62d4252f6bc58fd2a567075c72d03332562"},{"url":"https://git.kernel.org/stable/c/26f9e89bad5a7e3005d3dc97a2e2fa6d6b2b8bb6"},{"url":"https://git.kernel.org/stable/c/d5f3dae82705d9388434892915008da3bb83c4ba"},{"url":"https://git.kernel.org/stable/c/7e4f2702bbadbde887a5d8897297720a7f037ee5"},{"url":"https://git.kernel.org/stable/c/0a47f0be6557b4a851addd430383a4dc7ee08752"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:35:02.543Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}