RDMA/srpt: Add a check for valid 'mad_agent' pointer

{
  "id": "4c2ec2088320e783f4fd8605d20f344488c59f9b77f45ed2b13824ce1273ead3",
  "url": "https://osv.dev/vulnerability/CVE-2023-54274",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RDMA/srpt: Add a check for valid 'mad_agent' pointer",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Add a check for valid 'mad_agent' pointer When unregistering MAD agent, srpt module has a non-null check for 'mad_agent' pointer before invoking ib_unregister_mad_agent(). This check can pass if 'mad_agent' variable holds an error value. The 'mad_agent' can have an error value for a short window when srpt_add_one() and srpt_remove_one() is executed simultaneously. In srpt module, added a valid pointer check for 'sport->mad_agent' before unregistering MAD agent. This issue can hit when RoCE driver unregisters ib_device Stack Trace: ------------ BUG: kernel NULL pointer dereference, address: 000000000000004d PGD 145003067 P4D 145003067 PUD 2324fe067 PMD 0 Oops: 0002 [#1] PREEMPT SMP NOPTI CPU: 10 PID: 4459 Comm: kworker/u80:0 Kdump: loaded Tainted: P Hardware name: Dell Inc. PowerEdge R640/06NR82, BIOS 2.5.4 01/13/2020 Workqueue: bnxt_re bnxt_re_task [bnxt_re] RIP: 0010:_raw_spin_lock_irqsave+0x19/0x40 Call Trace: ib_unregister_mad_agent+0x46/0x2f0 [ib_core] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready ? __schedule+0x20b/0x560 srpt_unregister_mad_agent+0x93/0xd0 [ib_srpt] srpt_remove_one+0x20/0x150 [ib_srpt] remove_client_context+0x88/0xd0 [ib_core] bond0: (slave p2p1): link status definitely up, 100000 Mbps full duplex disable_device+0x8a/0x160 [ib_core] bond0: active interface up! ? kernfs_name_hash+0x12/0x80 (NULL device *): Bonding Info Received: rdev: 000000006c0b8247 __ib_unregister",
    "evidence": "osv:CVE-2023-54274",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.180",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.111",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.28",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.15",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-54274",
      "aliases": [
        "CVE-2023-54274"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a42d985bd5b234da8b61347a78dc3057bf7bb94d"
                },
                {
                  "fixed": "8ec6acdb9b6a80eeb13e778dfedb5d72a88f14fe"
                },
                {
                  "fixed": "00cc21e32ea1b8ebbabf5d645da9378d986bf8ba"
                },
                {
                  "fixed": "4323aaedeba32076e652aad056afd7885bb96bb7"
                },
                {
                  "fixed": "5f6ef2a574b0e0e0ea46ed0022575442df9d0bf9"
                },
                {
                  "fixed": "b713623bfef8cb1df9c769a3887fa10db63d1c54"
                },
                {
                  "fixed": "eca5cd9474cd26d62f9756f536e2e656d3f62f3a"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54274.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.3.0"
                },
                {
                  "fixed": "5.10.180"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.111"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.28"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.15"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.3.0"
                },
                {
                  "fixed": "6.3.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54274.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.278155849Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/00cc21e32ea1b8ebbabf5d645da9378d986bf8ba",
        "https://git.kernel.org/stable/c/4323aaedeba32076e652aad056afd7885bb96bb7",
        "https://git.kernel.org/stable/c/5f6ef2a574b0e0e0ea46ed0022575442df9d0bf9",
        "https://git.kernel.org/stable/c/8ec6acdb9b6a80eeb13e778dfedb5d72a88f14fe",
        "https://git.kernel.org/stable/c/b713623bfef8cb1df9c769a3887fa10db63d1c54",
        "https://git.kernel.org/stable/c/eca5cd9474cd26d62f9756f536e2e656d3f62f3a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54274.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-54274",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54274.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-54274",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518967,
  "published_at": "2025-12-30T12:16:03.696+00:00"
}