{"id":"CVE-2026-90094","title":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: process: Fix context switching MTE store-only tag check\n\nSCTLR_EL1.TCSO0 is set when user opt-in for MTE store-only tag check\nmode","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: process: Fix context switching MTE store-only tag check\n\nSCTLR_EL1.TCSO0 is set when user opt-in for MTE store-only tag check\nmode. However, it is not part of SC…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc < 00a73ce437e27fdc636a5ede445a4a491e01788d","Linux >= 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc < 2f10bc3ff24c91657887901c3235b803e5055f2b","Linux >= 4d51ff5bba00a13ca9b0b24883fa7adb07a167fc < b8f070ac3167595069feb1f794c127b805115645","Linux 6.17"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:01.020","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90094","references":[{"url":"https://git.kernel.org/stable/c/00a73ce437e27fdc636a5ede445a4a491e01788d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2f10bc3ff24c91657887901c3235b803e5055f2b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b8f070ac3167595069feb1f794c127b805115645","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.891Z","epss":0.00198,"epssPercentile":0.09825,"slug":"CVE-2026-90094","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\narm64: process: Fix context switching MTE store-only tag check\n\nSCTLR_EL1.TCSO0 is set when user opt-in for MTE store-only tag check\nmode. However, it is not part of SCTLR_USER_MASK which imply that on\ncontext switch we never clear SCTLR_EL1.TCSO0, so we are leaking that\nsetting into another task.\n\nFix that by including SCTLR_EL1_TCSO0_MASK into SCTLR_USER_MASK\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}