{
  "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-2026-90157",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-90157",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:06:49.081Z",
    "updatedAt": "2026-10-19T08:58:55.961Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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: Reject negative optlen in cgroup getsockopt hook",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject negative optlen in cgroup getsockopt hook\n\nA cgroup getsockopt BPF program can shrink ctx->optlen after the\nkernel getsockopt handler has run. The kernel-buffer variant, used by\nTCP_ZEROCOPY_RECEIVE, only rejects values larger than the original\nlength.\n\nIf BPF writes a negative optlen, that value is accepted and propagated\nback to the TCP getsockopt code. It can then be passed to\ncopy_to_sockptr() as a size_t and trigger the hardened usercopy\nbytes > INT_MAX warning.\n\nReject negative ctx.optlen in __cgroup_bpf_run_filter_getsockopt_kern(),\nmatching the lower-bound validation already present in the sockptr-based\ngetsockopt hook.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "08f61a34913558e06576e7b6318bf583f273c1be",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5b09d984b38b018b123c3a9e02a96bbc6468dbe5"
            },
            {
              "version": "9cacf81f8161111db25f98e78a7a0e32ae142b3f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "554ba7195c4108726450e24480c8449990c2268c"
            },
            {
              "version": "9cacf81f8161111db25f98e78a7a0e32ae142b3f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d02a12b4085ffe41ea750b1007f7a9c7aee2875a"
            },
            {
              "version": "9cacf81f8161111db25f98e78a7a0e32ae142b3f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e6fbf0eba87f50084d67508898f6ad6fc7ff1ba2"
            },
            {
              "version": "9cacf81f8161111db25f98e78a7a0e32ae142b3f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f68671b1a98d426c57864bd457c125fee14ac1a5"
            },
            {
              "version": "9cacf81f8161111db25f98e78a7a0e32ae142b3f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2bdbe00454200fcb0110f31eeca8d906a3515e74"
            },
            {
              "version": "9cacf81f8161111db25f98e78a7a0e32ae142b3f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "31a89af4f513d750fec196e2bb6195a7d4473e9f"
            },
            {
              "version": "9cacf81f8161111db25f98e78a7a0e32ae142b3f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1b5aacd5b2419b0790e955e466d389a61c79b4b1"
            },
            {
              "version": "5.10.188",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.270"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.12"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}