{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-53110",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T21:33:55.502360Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T21:41:26.885Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/smc/smc_cdc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "31817c530768b0199771ec6019571b4f0ddbf230",
              "status": "affected",
              "version": "0b29ec6436138721acf5844e558f7334a0fa61d5",
              "versionType": "git"
            },
            {
              "lessThan": "b108bd9e6be000492ebebe867daa699285978a10",
              "status": "affected",
              "version": "0b29ec6436138721acf5844e558f7334a0fa61d5",
              "versionType": "git"
            },
            {
              "lessThan": "3c270435db8aa34929263dddae8fd050f5216ecb",
              "status": "affected",
              "version": "0b29ec6436138721acf5844e558f7334a0fa61d5",
              "versionType": "git"
            },
            {
              "lessThan": "3ebac7cf0a184a8102821a7a00203f02bebda83c",
              "status": "affected",
              "version": "0b29ec6436138721acf5844e558f7334a0fa61d5",
              "versionType": "git"
            },
            {
              "lessThan": "22a825c541d775c1dbe7b2402786025acad6727b",
              "status": "affected",
              "version": "0b29ec6436138721acf5844e558f7334a0fa61d5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/smc/smc_cdc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.104",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.176",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.104",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.21",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.8",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler()\n\nWhen performing a stress test on SMC-R by rmmod mlx5_ib driver\nduring the wrk/nginx test, we found that there is a probability\nof triggering a panic while terminating all link groups.\n\nThis issue dues to the race between smc_smcr_terminate_all()\nand smc_buf_create().\n\n\t\t\tsmc_smcr_terminate_all\n\nsmc_buf_create\n/* init */\nconn-\u003esndbuf_desc = NULL;\n...\n\n\t\t\t__smc_lgr_terminate\n\t\t\t\tsmc_conn_kill\n\t\t\t\t\tsmc_close_abort\n\t\t\t\t\t\tsmc_cdc_get_slot_and_msg_send\n\n\t\t\t__softirqentry_text_start\n\t\t\t\tsmc_wr_tx_process_cqe\n\t\t\t\t\tsmc_cdc_tx_handler\n\t\t\t\t\t\tREAD(conn-\u003esndbuf_desc-\u003elen);\n\t\t\t\t\t\t/* panic dues to NULL sndbuf_desc */\n\nconn-\u003esndbuf_desc = xxx;\n\nThis patch tries to fix the issue by always to check the sndbuf_desc\nbefore send any cdc msg, to make sure that no null pointer is\nseen during cqe processing."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The race window is on the SMC server listen path (smc_listen_work \u2192 smc_listen_rdma_init \u2192 smc_conn_create then smc_buf_create), driven by remote CLC over TCP and peer LLC DELETE_LINK/protocol events over RoCE; SMC-Rv2/RoCEv2 and CLC are IP-routable, matching other SMC remote scores.\nAC:L - A remote peer controls both sides: it opens handshakes that register a connection with sndbuf_desc still NULL, and can force __smc_lgr_terminate via LLC DELETE_LINK ALL or CLC decline, retrying across parallel connections through a wide sleeping buf-create window.\nPR:N - CLC/LLC run before any application authentication; SMC performs no peer credential checks, and reaching an AF_SMC listener needs no account or capability on the target.\nUI:N - The listen worker and terminate_work run automatically on inbound SMC traffic and peer link teardown with no local user action required.\nS:U - The NULL dereference oops stays inside the host kernel SMC/RDMA softirq path and does not cross a VM, IOMMU, or other security authority.\nC:N - smc_cdc_tx_handler only loads conn-\u003esndbuf_desc-\u003elen when sndbuf_desc is still NULL (never assigned); this is a pure NULL pointer dereference with no UAF/OOB read or disclosure primitive.\nI:N - The fault is a NULL dereference on a never-set pointer under mmap_min_addr, with no OOB write, type confusion, or other corruption that could yield a write or code-execution primitive.\nA:H - The documented failure is a kernel panic/oops in softirq (smc_wr_tx_process_cqe \u2192 smc_cdc_tx_handler reading sndbuf_desc-\u003elen), which is High availability impact and is remotely repeatable."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:12:49.931Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/31817c530768b0199771ec6019571b4f0ddbf230"
        },
        {
          "url": "https://git.kernel.org/stable/c/b108bd9e6be000492ebebe867daa699285978a10"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c270435db8aa34929263dddae8fd050f5216ecb"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ebac7cf0a184a8102821a7a00203f02bebda83c"
        },
        {
          "url": "https://git.kernel.org/stable/c/22a825c541d775c1dbe7b2402786025acad6727b"
        }
      ],
      "title": "net/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53110",
    "datePublished": "2025-05-02T15:55:50.367Z",
    "dateReserved": "2025-05-02T15:51:43.554Z",
    "dateUpdated": "2026-10-15T21:41:26.885Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}