{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-72237",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-72237",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:54:26.685Z",
    "updatedAt": "2026-08-19T16:36:31.271Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "perf/x86/amd/brs: Fix kernel address leakage",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/amd/brs: Fix kernel address leakage\n\nA user-only branch stack can contain branches that originate from\nthe kernel. As a result, kernel addresses are exposed to user space\neven when PERF_SAMPLE_BRANCH_USER is requested. On AMD processors\nsupporting X86_FEATURE_BRS (Zen 3 only), perf can still report entries\nsuch as SYSRET/interrupt returns for which the branch-from addresses\nare in the kernel.\n\nE.g.\n\n  $ perf record -j any,u -c 4000 -e branch-brs -o - -- \\\n        perf bench syscall basic --loop 1000 | \\\n        perf script -i - -F brstack|tr ' ' '\\n'| \\\n        grep -E '0x[89a-f][0-9a-f]{15}'\n\n  ...\n  0xffffffff810001c4/0x72e2e32955eb/-/-/-/0//-\n  0xffffffff810001c4/0x72e2d94a9821/-/-/-/0//-\n  0xffffffff810001c4/0x72e2d94ffa1b/-/-/-/0//-\n  ...\n\nBRS provides no hardware branch filtering, so privilege level\nfiltering is performed entirely in software. However, amd_brs_match_plm()\nonly validates the branch-to address against the requested privilege\nlevels. For branches from the kernel to user space, the branch-from\naddress is left unchecked and is leaked. Extend the software filter to\nalso validate the branch-from address, so that any branch record whose\nbranch-from address is in the kernel is dropped when\nPERF_SAMPLE_BRANCH_USER is requested.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8910075d61a37e5b0d82e6c83ed9a0a31fe9ea08",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4f949bc3913a6e3ce3b8574ac6ed1da8ec7a5ad1"
            },
            {
              "version": "8910075d61a37e5b0d82e6c83ed9a0a31fe9ea08",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ac44b4a3d6137489f8fa2e794b12e849c6b22eaa"
            },
            {
              "version": "8910075d61a37e5b0d82e6c83ed9a0a31fe9ea08",
              "status": "affected",
              "versionType": "git",
              "lessThan": "90843d00dbc61220b66408ea0d8775cae9e51f70"
            },
            {
              "version": "8910075d61a37e5b0d82e6c83ed9a0a31fe9ea08",
              "status": "affected",
              "versionType": "git",
              "lessThan": "046f6244da9b68e463a849b21446b9424e531491"
            },
            {
              "version": "8910075d61a37e5b0d82e6c83ed9a0a31fe9ea08",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2e706be56f418718bb3ae66c0aa94f9b61150e6d"
            },
            {
              "version": "8910075d61a37e5b0d82e6c83ed9a0a31fe9ea08",
              "status": "affected",
              "versionType": "git",
              "lessThan": "47915e855fb38b42133e31ba917d99565f862154"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.19"
            },
            {
              "version": "6.1.183",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}