{
  "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-2026-98800",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98800",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-18T15:48:46.223Z",
    "updatedAt": "2026-10-19T09:25:53.724Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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: Wait for an RCU tasks grace period before freeing trampoline progs",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Wait for an RCU tasks grace period before freeing trampoline progs\n\nWhen a prog is detached from a trampoline, it is freed after an RCU\ngrace period, or an RCU tasks trace one if it is sleepable. This covers\nthe tasks that are running the prog, since the prog's enter helper takes\nthe matching read lock before the prog is called. On a preemptible\nkernel, it doesn't cover a task that was preempted in the trampoline\njust before the enter helper. That task holds no lock yet, and it calls\nthe prog after it was freed:\n\n  BUG: KASAN: vmalloc-out-of-bounds in __bpf_prog_enter_recur+0x3a5/0x3f0\n  Read of size 8 at addr ffffc90000055040 by task candidate/110\n  CPU: 1 UID: 0 PID: 110 Comm: candidate Not tainted 7.3.0-rc2-00014-g15071f2a1263-dirty #2 PREEMPT(full)\n  Call Trace:\n   <TASK>\n   __bpf_prog_enter_recur+0x3a5/0x3f0\n   bpf_trampoline_6442509193+0x37/0xf1\n   __x64_sys_futex+0x9/0x410\n   do_syscall_64+0xb0/0x530\n   ...\n\nWait for an RCU tasks grace period before the existing one when freeing\na prog that was linked to a trampoline. An RCU tasks grace period only\nends once the tasks that were preempted have run again, and\nbpf_tramp_image_put() already relies on it to free the image. It doesn't\nwait for tasks that sleep in the trampoline, the next commit takes care\nof those.\n\nOnly progs that were linked to a trampoline can be called this way, so\nbpf_trampoline_add_prog() marks them and other progs are still freed as\nbefore.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e21aa341785c679dd409c8cb71f864c00fe6c463",
              "status": "affected",
              "versionType": "git",
              "lessThan": "40955f6512a03f0e046f5256b0706b26ba191018"
            },
            {
              "version": "e21aa341785c679dd409c8cb71f864c00fe6c463",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0fb5751a6e411b1b466c06e50021818d9391df98"
            },
            {
              "version": "e21d2b92354b3cd25dd774ebb0f0e52ff04a7861",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "85d177f56e5256e14b74a65940f981f6e3e8bb32",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.10.28",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.11"
            },
            {
              "version": "5.11.11",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.12"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.12"
            },
            {
              "version": "7.2.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}