{
  "affected": [],
  "aliases": [
    "CVE-2026-31641"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125",
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T15:16:43Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix RxGK token loading to check bounds\n\nrxrpc_preparse_xdr_yfs_rxgk() reads the raw key length and ticket length\nfrom the XDR token as u32 values and passes each through round_up(x, 4)\nbefore using the rounded value for validation and allocation.  When the raw\nlength is \u003e= 0xfffffffd, round_up() wraps to 0, so the bounds check and\nkzalloc both use 0 while the subsequent memcpy still copies the original\n~4 GiB value, producing a heap buffer overflow reachable from an\nunprivileged add_key() call.\n\nFix this by:\n\n (1) Rejecting raw key lengths above AFSTOKEN_GK_KEY_MAX and raw ticket\n     lengths above AFSTOKEN_GK_TOKEN_MAX before rounding, consistent with\n     the caps that the RxKAD path already enforces via AFSTOKEN_RK_TIX_MAX.\n\n (2) Sizing the flexible-array allocation from the validated raw key\n     length via struct_size_t() instead of the rounded value.\n\n (3) Caching the raw lengths so that the later field assignments and\n     memcpy calls do not re-read from the token, eliminating a class of\n     TOCTOU re-parse.\n\nThe control path (valid token with lengths within bounds) is unaffected.",
  "id": "GHSA-p4pm-x7ch-5mvc",
  "modified": "2026-06-30T03:36:23Z",
  "published": "2026-04-24T15:32:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31641"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:27288"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31641"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461548"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e04596cba8a86cbff9c3f4bf0a524a3a488773c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49875b360c2b83a3c226e189c502e501d83e6445"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d179a868dd755b0cfcf7582e00943d702b9943b8"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31641.json"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.6 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.2 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.13 for RHEL 8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for ARM 64 10 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.13 for RHEL 8 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for IBM z Systems 10 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.13 for RHEL 9 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat CodeReady Linux Builder for ARM 64 9 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.12 for RHEL 8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.12 for RHEL 8 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-43198",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43198"
    },
    {
      "name": "CVE-2026-43414",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43414"
    },
    {
      "name": "CVE-2026-4878",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-4878"
    },
    {
      "name": "CVE-2026-31641",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31641"
    },
    {
      "name": "CVE-2026-31787",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31787"
    },
    {
      "name": "CVE-2026-46117",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46117"
    },
    {
      "name": "CVE-2026-43284",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43284"
    },
    {
      "name": "CVE-2026-46173",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46173"
    },
    {
      "name": "CVE-2026-43279",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43279"
    },
    {
      "name": "CVE-2026-46331",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46331"
    },
    {
      "name": "CVE-2026-31786",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31786"
    },
    {
      "name": "CVE-2026-31772",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31772"
    },
    {
      "name": "CVE-2026-43260",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43260"
    },
    {
      "name": "CVE-2026-31669",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31669"
    },
    {
      "name": "CVE-2026-46090",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46090"
    },
    {
      "name": "CVE-2026-39979",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-39979"
    },
    {
      "name": "CVE-2026-35385",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-35385"
    },
    {
      "name": "CVE-2026-40164",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-40164"
    },
    {
      "name": "CVE-2026-45984",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45984"
    },
    {
      "name": "CVE-2026-46145",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46145"
    },
    {
      "name": "CVE-2026-46125",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46125"
    },
    {
      "name": "CVE-2026-46152",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46152"
    },
    {
      "name": "CVE-2026-46135",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46135"
    },
    {
      "name": "CVE-2026-43056",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43056"
    },
    {
      "name": "CVE-2026-46054",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46054"
    },
    {
      "name": "CVE-2026-31636",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31636"
    },
    {
      "name": "CVE-2026-43330",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43330"
    },
    {
      "name": "CVE-2026-31419",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31419"
    },
    {
      "name": "CVE-2026-31488",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31488"
    },
    {
      "name": "CVE-2026-46056",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46056"
    },
    {
      "name": "CVE-2026-41035",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-41035"
    },
    {
      "name": "CVE-2026-45898",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45898"
    },
    {
      "name": "CVE-2026-43037",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43037"
    },
    {
      "name": "CVE-2026-31474",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31474"
    },
    {
      "name": "CVE-2026-46166",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46166"
    },
    {
      "name": "CVE-2026-43038",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43038"
    }
  ],
  "initial_release_date": "2026-06-26T00:00:00",
  "last_revision_date": "2026-06-26T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0808",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-06-26T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
    },
    {
      "description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux de Red Hat. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance, une \u00e9l\u00e9vation de privil\u00e8ges et un d\u00e9ni de service \u00e0 distance.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux de Red Hat",
  "vendor_advisories": [
    {
      "published_at": "2026-06-22",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27707",
      "url": "https://access.redhat.com/errata/RHSA-2026:27707"
    },
    {
      "published_at": "2026-06-24",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:28740",
      "url": "https://access.redhat.com/errata/RHSA-2026:28740"
    },
    {
      "published_at": "2026-06-24",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:28738",
      "url": "https://access.redhat.com/errata/RHSA-2026:28738"
    },
    {
      "published_at": "2026-06-22",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27789",
      "url": "https://access.redhat.com/errata/RHSA-2026:27789"
    },
    {
      "published_at": "2026-06-24",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:28750",
      "url": "https://access.redhat.com/errata/RHSA-2026:28750"
    },
    {
      "published_at": "2026-06-24",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:28742",
      "url": "https://access.redhat.com/errata/RHSA-2026:28742"
    },
    {
      "published_at": "2026-06-22",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27709",
      "url": "https://access.redhat.com/errata/RHSA-2026:27709"
    },
    {
      "published_at": "2026-06-22",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27706",
      "url": "https://access.redhat.com/errata/RHSA-2026:27706"
    },
    {
      "published_at": "2026-06-19",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27354",
      "url": "https://access.redhat.com/errata/RHSA-2026:27354"
    },
    {
      "published_at": "2026-06-22",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27704",
      "url": "https://access.redhat.com/errata/RHSA-2026:27704"
    },
    {
      "published_at": "2026-06-22",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27812",
      "url": "https://access.redhat.com/errata/RHSA-2026:27812"
    },
    {
      "published_at": "2026-06-19",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27353",
      "url": "https://access.redhat.com/errata/RHSA-2026:27353"
    },
    {
      "published_at": "2026-06-19",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27288",
      "url": "https://access.redhat.com/errata/RHSA-2026:27288"
    },
    {
      "published_at": "2026-06-24",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:28741",
      "url": "https://access.redhat.com/errata/RHSA-2026:28741"
    },
    {
      "published_at": "2026-06-25",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:26528",
      "url": "https://access.redhat.com/errata/RHSA-2026:26528"
    },
    {
      "published_at": "2026-06-19",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:27355",
      "url": "https://access.redhat.com/errata/RHSA-2026:27355"
    },
    {
      "published_at": "2026-06-24",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:28748",
      "url": "https://access.redhat.com/errata/RHSA-2026:28748"
    },
    {
      "published_at": "2026-06-25",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:30129",
      "url": "https://access.redhat.com/errata/RHSA-2026:30129"
    },
    {
      "published_at": "2026-06-25",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:26542",
      "url": "https://access.redhat.com/errata/RHSA-2026:26542"
    }
  ]
}

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/rxrpc/key.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3e04596cba8a86cbff9c3f4bf0a524a3a488773c",
              "status": "affected",
              "version": "0ca100ff4df64f5d0f6c1dd5080c3e096786bea6",
              "versionType": "git"
            },
            {
              "lessThan": "49875b360c2b83a3c226e189c502e501d83e6445",
              "status": "affected",
              "version": "0ca100ff4df64f5d0f6c1dd5080c3e096786bea6",
              "versionType": "git"
            },
            {
              "lessThan": "d179a868dd755b0cfcf7582e00943d702b9943b8",
              "status": "affected",
              "version": "0ca100ff4df64f5d0f6c1dd5080c3e096786bea6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/rxrpc/key.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.2"
          ],
          "defaultStatus": "affected",
          "product": "Red Hat Enterprise Linux AppStream (v. 10)",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.2"
          ],
          "defaultStatus": "affected",
          "product": "Red Hat Enterprise Linux BaseOS (v. 10)",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.2"
          ],
          "defaultStatus": "affected",
          "product": "Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.2"
          ],
          "defaultStatus": "affected",
          "product": "Red Hat Enterprise Linux Real Time for NFV (v. 10)",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.2"
          ],
          "defaultStatus": "affected",
          "product": "Red Hat Enterprise Linux Real Time (v. 10)",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unaffected",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "unaffected",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "defaultStatus": "unaffected",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "unaffected",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EAE31F43-AAC5-4801-B2B2-119D62A532A2",
              "versionEndExcluding": "6.18.23",
              "versionStartIncluding": "6.16.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1490EF9B-9080-481C-8D22-1306AAE664E4",
              "versionEndExcluding": "6.19.13",
              "versionStartIncluding": "6.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.16:-:*:*:*:*:*:*",
              "matchCriteriaId": "6238B17D-C12B-458F-A138-97039BFC4595",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*",
              "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix RxGK token loading to check bounds\n\nrxrpc_preparse_xdr_yfs_rxgk() reads the raw key length and ticket length\nfrom the XDR token as u32 values and passes each through round_up(x, 4)\nbefore using the rounded value for validation and allocation.  When the raw\nlength is \u003e= 0xfffffffd, round_up() wraps to 0, so the bounds check and\nkzalloc both use 0 while the subsequent memcpy still copies the original\n~4 GiB value, producing a heap buffer overflow reachable from an\nunprivileged add_key() call.\n\nFix this by:\n\n (1) Rejecting raw key lengths above AFSTOKEN_GK_KEY_MAX and raw ticket\n     lengths above AFSTOKEN_GK_TOKEN_MAX before rounding, consistent with\n     the caps that the RxKAD path already enforces via AFSTOKEN_RK_TIX_MAX.\n\n (2) Sizing the flexible-array allocation from the validated raw key\n     length via struct_size_t() instead of the rounded value.\n\n (3) Caching the raw lengths so that the later field assignments and\n     memcpy calls do not re-read from the token, eliminating a class of\n     TOCTOU re-parse.\n\nThe control path (valid token with lengths within bounds) is unaffected."
    }
  ],
  "id": "CVE-2026-31641",
  "lastModified": "2026-06-30T03:18:26.193",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.5,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-24T15:16:43.463",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3e04596cba8a86cbff9c3f4bf0a524a3a488773c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/49875b360c2b83a3c226e189c502e501d83e6445"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d179a868dd755b0cfcf7582e00943d702b9943b8"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/errata/RHSA-2026:27288"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31641"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461548"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31641.json"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}