{
  "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-2023-53169",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53169",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-15T14:04:02.395Z",
    "updatedAt": "2026-05-11T19:39:36.360Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "x86/resctrl: Clear staged_config[] before and after it is used",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/resctrl: Clear staged_config[] before and after it is used\n\nAs a temporary storage, staged_config[] in rdt_domain should be cleared\nbefore and after it is used. The stale value in staged_config[] could\ncause an MSR access error.\n\nHere is a reproducer on a system with 16 usable CLOSIDs for a 15-way L3\nCache (MBA should be disabled if the number of CLOSIDs for MB is less than\n16.) :\n\tmount -t resctrl resctrl -o cdp /sys/fs/resctrl\n\tmkdir /sys/fs/resctrl/p{1..7}\n\tumount /sys/fs/resctrl/\n\tmount -t resctrl resctrl /sys/fs/resctrl\n\tmkdir /sys/fs/resctrl/p{1..8}\n\nAn error occurs when creating resource group named p8:\n    unchecked MSR access error: WRMSR to 0xca0 (tried to write 0x00000000000007ff) at rIP: 0xffffffff82249142 (cat_wrmsr+0x32/0x60)\n    Call Trace:\n     <IRQ>\n     __flush_smp_call_function_queue+0x11d/0x170\n     __sysvec_call_function+0x24/0xd0\n     sysvec_call_function+0x89/0xc0\n     </IRQ>\n     <TASK>\n     asm_sysvec_call_function+0x16/0x20\n\nWhen creating a new resource control group, hardware will be configured\nby the following process:\n    rdtgroup_mkdir()\n      rdtgroup_mkdir_ctrl_mon()\n        rdtgroup_init_alloc()\n          resctrl_arch_update_domains()\n\nresctrl_arch_update_domains() iterates and updates all resctrl_conf_type\nwhose have_new_ctrl is true. Since staged_config[] holds the same values as\nwhen CDP was enabled, it will continue to update the CDP_CODE and CDP_DATA\nconfigurations. When group p8 is created, get_config_index() called in\nresctrl_arch_update_domains() will return 16 and 17 as the CLOSIDs for\nCDP_CODE and CDP_DATA, which will be translated to an invalid register -\n0xca0 in this scenario.\n\nFix it by clearing staged_config[] before and after it is used.\n\n[reinette: re-order commit tags]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "75408e43509ed6207870c0e7e28656acbbc1f7fd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "86db319d25db70cf4af4557e05f6fa6f39c70003"
            },
            {
              "version": "75408e43509ed6207870c0e7e28656acbbc1f7fd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3fc5941ecc31a495b6b84b465f36155009db99b5"
            },
            {
              "version": "75408e43509ed6207870c0e7e28656acbbc1f7fd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8ecc60ef9318f0d533b866fa421858cc185bccfc"
            },
            {
              "version": "75408e43509ed6207870c0e7e28656acbbc1f7fd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0424a7dfe9129b93f29b277511a60e87f052ac6b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "5.15.104",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.21",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}