{
  "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-2023-54303",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-54303",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-30T12:23:37.827Z",
    "updatedAt": "2026-08-05T09:19:03.573Z",
    "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": "bpf: Disable preemption in bpf_perf_event_output",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disable preemption in bpf_perf_event_output\n\nThe nesting protection in bpf_perf_event_output relies on disabled\npreemption, which is guaranteed for kprobes and tracepoints.\n\nHowever bpf_perf_event_output can be also called from uprobes context\nthrough bpf_prog_run_array_sleepable function which disables migration,\nbut keeps preemption enabled.\n\nThis can cause task to be preempted by another one inside the nesting\nprotection and lead eventually to two tasks using same perf_sample_data\nbuffer and cause crashes like:\n\n  kernel tried to execute NX-protected page - exploit attempt? (uid: 0)\n  BUG: unable to handle page fault for address: ffffffff82be3eea\n  ...\n  Call Trace:\n   ? __die+0x1f/0x70\n   ? page_fault_oops+0x176/0x4d0\n   ? exc_page_fault+0x132/0x230\n   ? asm_exc_page_fault+0x22/0x30\n   ? perf_output_sample+0x12b/0x910\n   ? perf_event_output+0xd0/0x1d0\n   ? bpf_perf_event_output+0x162/0x1d0\n   ? bpf_prog_c6271286d9a4c938_krava1+0x76/0x87\n   ? __uprobe_perf_func+0x12b/0x540\n   ? uprobe_dispatcher+0x2c4/0x430\n   ? uprobe_notify_resume+0x2da/0xce0\n   ? atomic_notifier_call_chain+0x7b/0x110\n   ? exit_to_user_mode_prepare+0x13e/0x290\n   ? irqentry_exit_to_user_mode+0x5/0x30\n   ? asm_exc_int3+0x35/0x40\n\nFixing this by disabling preemption in bpf_perf_event_output.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3654ed5daf492463c3faa434c7000d45c2da2ace"
            },
            {
              "version": "8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a0ac32cf61e5a76e2429e486925a52ee41dd75e3"
            },
            {
              "version": "8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f2c67a3e60d1071b65848efaa8c3b66c363dd025"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.0"
            },
            {
              "version": "6.1.45",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.4.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}