{
  "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-2026-89530",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89530",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:44:10.024Z",
    "updatedAt": "2026-10-21T12:47:42.592Z",
    "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": "svcrdma: Reject inline replies that overflow the pull-up buffer",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Reject inline replies that overflow the pull-up buffer\n\nAn RPC-over-RDMA client can request a reply, such as an NFS READ\npayload, without providing a Write list or a Reply chunk to carry\nit. When such a reply needs more scatter/gather entries than the\ndevice's Send Queue supports, svc_rdma_pull_up_needed() selects\npull-up and svc_rdma_pull_up_reply_msg() linearizes the whole\nreply into sctxt->sc_xprt_buf. That buffer is only sc_max_req_size\nbytes, while the reply on this path is bounded only by the client's\nrequest, so svc_rdma_xb_linearize() copies past the end of the\nbuffer and corrupts adjacent slab memory. The oversized length is\nthen stored in sc_sges[0].length and posted, so the device also\nreads beyond the mapped region.\n\nThe SGE-exhaustion branch is the only pull-up path that can exceed\nthe buffer: the threshold branch pulls up only replies smaller\nthan RPCRDMA_PULLUP_THRESH, and replies that fit the device's SGE\nbudget are sent directly without linearization. Make\nsvc_rdma_pull_up_needed() report -E2BIG when the reply it would\npull up cannot fit sc_max_req_size, and fail the request with\nERR_CHUNK as RFC 8166 Section 4.5.3 directs rather than dropping\nthe connection.\n\nThe helper no longer answers a simple yes/no question: it now\nreports pull-up, no pull-up, or -E2BIG for a reply too large to\nlinearize. Rename svc_rdma_pull_up_needed() to\nsvc_rdma_check_pull_up() so its name no longer implies a boolean\npredicate.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e248aa7be86e8179f20ac0931774ecd746f3f5bf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8068358f445a11296328ffa7c524701596814a17"
            },
            {
              "version": "e248aa7be86e8179f20ac0931774ecd746f3f5bf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fcd91b9957462d398792201c239dffaeff1cc8b2"
            },
            {
              "version": "e248aa7be86e8179f20ac0931774ecd746f3f5bf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1949dd1576f7a8aa161b1330c6125df9d53046d5"
            },
            {
              "version": "e248aa7be86e8179f20ac0931774ecd746f3f5bf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8ec60eb51fae37cd3d334ff26e4a7d6fb21ff7cf"
            },
            {
              "version": "e248aa7be86e8179f20ac0931774ecd746f3f5bf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0fbe20dfe74b783d255bf389a6ea77aa25dc7860"
            },
            {
              "version": "9b65b18f817d9ada2bf67351f24bdcce6789a0bb",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "d564356e1919d1178568c19af410cfc1a9076663",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.19.22",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "4.20.9",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.21"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.0"
            },
            {
              "version": "6.6.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}