{
  "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-2025-38502",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38502",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-08-16T09:34:25.135Z",
    "updatedAt": "2026-10-15T21:52:17.683Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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: Fix oob access in cgroup local storage",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix oob access in cgroup local storage\n\nLonial reported that an out-of-bounds access in cgroup local storage\ncan be crafted via tail calls. Given two programs each utilizing a\ncgroup local storage with a different value size, and one program\ndoing a tail call into the other. The verifier will validate each of\nthe indivial programs just fine. However, in the runtime context\nthe bpf_cg_run_ctx holds an bpf_prog_array_item which contains the\nBPF program as well as any cgroup local storage flavor the program\nuses. Helpers such as bpf_get_local_storage() pick this up from the\nruntime context:\n\n  ctx = container_of(current->bpf_ctx, struct bpf_cg_run_ctx, run_ctx);\n  storage = ctx->prog_item->cgroup_storage[stype];\n\n  if (stype == BPF_CGROUP_STORAGE_SHARED)\n    ptr = &READ_ONCE(storage->buf)->data[0];\n  else\n    ptr = this_cpu_ptr(storage->percpu_buf);\n\nFor the second program which was called from the originally attached\none, this means bpf_get_local_storage() will pick up the former\nprogram's map, not its own. With mismatching sizes, this can result\nin an unintended out-of-bounds access.\n\nTo fix this issue, we need to extend bpf_map_owner with an array of\nstorage_cookie[] to match on i) the exact maps from the original\nprogram if the second program was using bpf_get_local_storage(), or\nii) allow the tail call combination if the second program was not\nusing any of the cgroup local storage maps.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c1c74584b9b4043c52e41fec415226e582d266a3"
            },
            {
              "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "66da7cee78590259b400e51a70622ccd41da7bb2"
            },
            {
              "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7acfa07c585e3d7a64654d38f0a5c762877d0b9b"
            },
            {
              "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "41688d1fc5d163a6c2c0e95c0419e2cb31a44648"
            },
            {
              "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "19341d5c59e8c7e8528e40f8663e99d67810473c"
            },
            {
              "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "abad3d0bad72a52137e0c350c59542d75ae4f513"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.9"
            },
            {
              "version": "5.15.192",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.151",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.105",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.46",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.16.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}