netlink: annotate accesses to nlk->cb_running

{
  "id": "a7110ae9769632ea914bd810fa438e6c344a1c8b1f25521bad3779b71ad3d44d",
  "url": "https://osv.dev/vulnerability/CVE-2023-53853",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "netlink: annotate accesses to nlk->cb_running",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: netlink: annotate accesses to nlk->cb_running Both netlink_recvmsg() and netlink_native_seq_show() read nlk->cb_running locklessly. Use READ_ONCE() there. Add corresponding WRITE_ONCE() to netlink_dump() and __netlink_dump_start() syzbot reported: BUG: KCSAN: data-race in __netlink_dump_start / netlink_recvmsg write to 0xffff88813ea4db59 of 1 bytes by task 28219 on cpu 0: __netlink_dump_start+0x3af/0x4d0 net/netlink/af_netlink.c:2399 netlink_dump_start include/linux/netlink.h:308 [inline] rtnetlink_rcv_msg+0x70f/0x8c0 net/core/rtnetlink.c:6130 netlink_rcv_skb+0x126/0x220 net/netlink/af_netlink.c:2577 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6192 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x56f/0x640 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x665/0x770 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] sock_write_iter+0x1aa/0x230 net/socket.c:1138 call_write_iter include/linux/fs.h:1851 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x463/0x760 fs/read_write.c:584 ksys_write+0xeb/0x1a0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xff",
    "evidence": "osv:CVE-2023-53853",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.14.316",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "4.19.284",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.244",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.181",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.113",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.30",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53853",
      "aliases": [
        "CVE-2023-53853"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "16b304f3404f8e0243d5ee2b70b68767b7b59b2b"
                },
                {
                  "fixed": "e25e9d8a210ed78bdf0f364576dbee13aefadbf8"
                },
                {
                  "fixed": "840a647499b093621167de56ffa8756dfc69f242"
                },
                {
                  "fixed": "a507022c862e10744a92c4bf5709775450a110ad"
                },
                {
                  "fixed": "f92557f79a60cb142258f5fa7194f327573fadd8"
                },
                {
                  "fixed": "1d5c8b01f1df0461256a6d75854ed806f50645a3"
                },
                {
                  "fixed": "a115dadf8995b1730c36c474401d97355705cb88"
                },
                {
                  "fixed": "02e7afd659a4c9ce1e98fc01ab4c510f3de1f0b3"
                },
                {
                  "fixed": "a939d14919b799e6fff8a9c80296ca229ba2f8a4"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53853.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.12.0"
                },
                {
                  "fixed": "4.14.316"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.15.0"
                },
                {
                  "fixed": "4.19.284"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.20.0"
                },
                {
                  "fixed": "5.4.244"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "5.10.181"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.113"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.30"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.3.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53853.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.444868489Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/02e7afd659a4c9ce1e98fc01ab4c510f3de1f0b3",
        "https://git.kernel.org/stable/c/1d5c8b01f1df0461256a6d75854ed806f50645a3",
        "https://git.kernel.org/stable/c/840a647499b093621167de56ffa8756dfc69f242",
        "https://git.kernel.org/stable/c/a115dadf8995b1730c36c474401d97355705cb88",
        "https://git.kernel.org/stable/c/a507022c862e10744a92c4bf5709775450a110ad",
        "https://git.kernel.org/stable/c/a939d14919b799e6fff8a9c80296ca229ba2f8a4",
        "https://git.kernel.org/stable/c/e25e9d8a210ed78bdf0f364576dbee13aefadbf8",
        "https://git.kernel.org/stable/c/f92557f79a60cb142258f5fa7194f327573fadd8",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53853.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53853",
        "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/2023/53xxx/CVE-2023-53853.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53853",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518041,
  "published_at": "2025-12-09T01:30:18.628+00:00"
}