{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4d51ff5bba00a13ca9b0b24883fa7adb07a167fc"
            },
            {
              "fixed": "00a73ce437e27fdc636a5ede445a4a491e01788d"
            },
            {
              "fixed": "2f10bc3ff24c91657887901c3235b803e5055f2b"
            },
            {
              "fixed": "b8f070ac3167595069feb1f794c127b805115645"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.17.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90094.json"
  },
  "details": "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 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",
  "id": "CVE-2026-90094",
  "modified": "2026-09-19T03:30:34.203961547Z",
  "published": "2026-09-17T16:06:07.494Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00a73ce437e27fdc636a5ede445a4a491e01788d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f10bc3ff24c91657887901c3235b803e5055f2b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8f070ac3167595069feb1f794c127b805115645"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90094.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90094"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "arm64: process: Fix context switching MTE store-only tag check"
}