nvmet-tcp: don't restore null sk_state_change

{
  "id": "5f675deb129ebc767c70c0025139e44a6e76c000b8a760d0cde660937093a110",
  "url": "https://osv.dev/vulnerability/CVE-2025-38035",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nvmet-tcp: don't restore null sk_state_change",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: don't restore null sk_state_change queue->state_change is set as part of nvmet_tcp_set_queue_sock(), but if the TCP connection isn't established when nvmet_tcp_set_queue_sock() is called then queue->state_change isn't set and sock->sk->sk_state_change isn't replaced. As such we don't need to restore sock->sk->sk_state_change if queue->state_change is NULL. This avoids NULL pointer dereferences such as this: [ 286.462026][ C0] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 286.462814][ C0] #PF: supervisor instruction fetch in kernel mode [ 286.463796][ C0] #PF: error_code(0x0010) - not-present page [ 286.464392][ C0] PGD 8000000140620067 P4D 8000000140620067 PUD 114201067 PMD 0 [ 286.465086][ C0] Oops: Oops: 0010 [#1] SMP KASAN PTI [ 286.465559][ C0] CPU: 0 UID: 0 PID: 1628 Comm: nvme Not tainted 6.15.0-rc2+ #11 PREEMPT(voluntary) [ 286.466393][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014 [ 286.467147][ C0] RIP: 0010:0x0 [ 286.467420][ C0] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 286.467977][ C0] RSP: 0018:ffff8883ae008580 EFLAGS: 00010246 [ 286.468425][ C0] RAX: 0000000000000000 RBX: ffff88813fd34100 RCX: ffffffffa386cc43 [ 286.469019][ C0] RDX: 1ffff11027fa68b6 RSI: 0000000000000008 RDI: ffff88813fd34100 [ 286.469545][ C0] RBP: ffff88813fd34160 R08: 0000000000000000 R09: ffffed1027fa682c [ 286.470072][ C0] R10: fff",
    "evidence": "osv:CVE-2025-38035",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.294",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.238",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.185",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.141",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.93",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.31",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.14.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-38035",
      "aliases": [
        "CVE-2025-38035"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "872d26a391da92ed8f0c0f5cb5fef428067b7f30"
                },
                {
                  "fixed": "6265538446e2426f4bf3b57e91d7680b2047ddd9"
                },
                {
                  "fixed": "17e58be5b49f58bf17799a504f55c2d05ab2ecdc"
                },
                {
                  "fixed": "fc01b547c3f8bfa6e1d23cd5a2c63c736e8c3e4e"
                },
                {
                  "fixed": "c240375587ddcc80e1022f52ee32b946bbc3a639"
                },
                {
                  "fixed": "3a982ada411b8c52695f1784c3f4784771f30209"
                },
                {
                  "fixed": "ec462449f4cf616b0aa2ed119f5f44b5fdfcefab"
                },
                {
                  "fixed": "a21cb31642ffc84ca4ce55028212a96f72f54d30"
                },
                {
                  "fixed": "46d22b47df2741996af277a2838b95f130436c13"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38035.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.0.0"
                },
                {
                  "fixed": "5.4.294"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "5.10.238"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.185"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.141"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.93"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.31"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.14.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38035.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.436495006Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/17e58be5b49f58bf17799a504f55c2d05ab2ecdc",
        "https://git.kernel.org/stable/c/3a982ada411b8c52695f1784c3f4784771f30209",
        "https://git.kernel.org/stable/c/46d22b47df2741996af277a2838b95f130436c13",
        "https://git.kernel.org/stable/c/6265538446e2426f4bf3b57e91d7680b2047ddd9",
        "https://git.kernel.org/stable/c/a21cb31642ffc84ca4ce55028212a96f72f54d30",
        "https://git.kernel.org/stable/c/c240375587ddcc80e1022f52ee32b946bbc3a639",
        "https://git.kernel.org/stable/c/ec462449f4cf616b0aa2ed119f5f44b5fdfcefab",
        "https://git.kernel.org/stable/c/fc01b547c3f8bfa6e1d23cd5a2c63c736e8c3e4e",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38035.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38035",
        "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/2025/38xxx/CVE-2025-38035.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38035",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496930,
  "published_at": "2025-06-18T09:33:22.244+00:00"
}