{"id":"CVE-2026-90273","title":"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()…","summary":"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()…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-772"],"vendor":"Linux","product":"Linux","affected":["Linux >= 810ac401db1fe432020d7936a199591000de8279 < 7e4f2702bbadbde887a5d8897297720a7f037ee5","Linux >= 810ac401db1fe432020d7936a199591000de8279 < 0a47f0be6557b4a851addd430383a4dc7ee08752","Linux 5.15"],"published":"2026-09-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:18:00.173","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90273","references":[{"url":"https://git.kernel.org/stable/c/0a47f0be6557b4a851addd430383a4dc7ee08752","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7e4f2702bbadbde887a5d8897297720a7f037ee5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d5f3dae82705d9388434892915008da3bb83c4ba","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90273.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90273"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536322"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90273"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90273"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90273.mbox"},{"url":"https://git.kernel.org/stable/c/ba63c62d4252f6bc58fd2a567075c72d03332562"},{"url":"https://git.kernel.org/stable/c/26f9e89bad5a7e3005d3dc97a2e2fa6d6b2b8bb6"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00209,"epssPercentile":0.10957,"cvssSource":"vendor","ingestedAt":"2026-09-17T16:21:47.837Z","slug":"CVE-2026-90273","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90273.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":216342,"id":"CVE-2026-90273","ts":1791274099471,"field":"cvss","old":null,"new":"5.5"},{"seq":216341,"id":"CVE-2026-90273","ts":1791274099471,"field":"severity","old":"none","new":"medium"}]}