{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/rxrpc/recvmsg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8cd8cf3052fff9a4b86b25734f610e4af03786d3",
              "status": "affected",
              "version": "5800b1cf3fd8ccab752a101865be1e76dac33142",
              "versionType": "git"
            },
            {
              "lessThan": "1297ae6aeebc3863cb437e42a1bc4cd6173e43d9",
              "status": "affected",
              "version": "5800b1cf3fd8ccab752a101865be1e76dac33142",
              "versionType": "git"
            },
            {
              "lessThan": "a2f299b4d5510147fa8629a6aba2869bbcc88aea",
              "status": "affected",
              "version": "5800b1cf3fd8ccab752a101865be1e76dac33142",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/rxrpc/recvmsg.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": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix double unlock in rxrpc_recvmsg()\n\nFix a double unlock in rxrpc_recvmsg() when dealing with OOB messages."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - RxRPC processes CHALLENGE packets from remote UDP peers; with RXRPC_MANAGE_RESPONSE and RxGK security, a network peer can queue OOB challenges that are consumed on the next recvmsg() during normal client authentication (e.g., AFS/YFS).\nAC:L - An attacker who is the RxRPC peer (or a local user running a malicious server) can reliably deliver a CHALLENGE and trigger recvmsg() on demand; no rare timing, layout, or victim state outside attacker control is required.\nPR:N - No administrative capability is needed on the victim; any remote peer in an RxRPC connection can send CHALLENGE packets, and unprivileged local users can create AF_RXRPC sockets, set MANAGE_RESPONSE, and call recvmsg() without special privileges.\nUI:N - Exploitation does not require victim interaction beyond normal automated RxRPC/AFS client operation; recvmsg() is invoked automatically when OOB challenges are queued during connection security negotiation.\nS:U - Impact is confined to kernel memory and locking on the affected host; it does not cross VM, container, or IOMMU security boundaries into a separate authority.\nC:H - Double release_sock() corrupts socket lock ownership, allowing concurrent unsynchronized access to socket/call state and adjacent kernel heap objects, which can be leveraged for arbitrary kernel memory disclosure.\nI:H - The corrupted socket lock permits overlapping recvmsg()/sendmsg() access to connection and skb state, enabling heap corruption and control-flow hijack primitives typical of kernel locking bugs.\nA:H - The double unlock triggers lockdep warnings and can panic/oops the kernel or hang socket I/O when concurrent threads access the same RxRPC socket after ownership is incorrectly cleared."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:47:03.327Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8cd8cf3052fff9a4b86b25734f610e4af03786d3"
        },
        {
          "url": "https://git.kernel.org/stable/c/1297ae6aeebc3863cb437e42a1bc4cd6173e43d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/a2f299b4d5510147fa8629a6aba2869bbcc88aea"
        }
      ],
      "title": "rxrpc: Fix double unlock in rxrpc_recvmsg()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74428",
    "datePublished": "2026-08-15T05:59:29.668Z",
    "dateReserved": "2026-08-15T05:44:03.895Z",
    "dateUpdated": "2026-08-17T05:47:03.327Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}