{
  "cveId": "CVE-2022-50259",
  "url": "https://patchblox.com/security/cve/CVE-2022-50259",
  "summary": "CVE-2022-50259 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50259, released September 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  bpf, sockmap: fix race in sock_map_free()  sock_...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  bpf, sockmap: fix race in sock_map_free()  sock_map_free() calls release_sock(sk) without owning a reference on the socket. This can cause use-after-free as syzbot found [1]  Jakub Sitnicki already took care of a similar issue in sock_hash_free() in commit 75e68e5bf2c7 (\u0022bpf, sockhash: Synchronize delete from bucket list on map free\u0022)  [1] refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 3785 at lib/refcount.c:31 refcount_warn_saturate\u002B0x17c/0x1a0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 3785 Comm: kworker/u4:6 Not tainted 6.1.0-rc7-syzkaller-00103-gef4d3ea40565 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: events_unbound bpf_map_free_deferred RIP: 0010:refcount_warn_saturate\u002B0x17c/0x1a0 lib/refcount.c:31 Code: 68 8b 31 c0 e8 75 71 15 fd 0f 0b e9 64 ff ff ff e8 d9 6e 4e fd c6 05 62 9c 3d 0a 01 48 c7 c7 80 bb 68 8b 31 c0 e8 54 71 15 fd \u003C0f\u003E 0b e9 43 ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a2 fe ff RSP: 0018:ffffc9000456fb60 EFLAGS: 00010246 RAX: eae59bab72dcd700 RBX: 0000000000000004 RCX: ffff8880207057c0 RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000 RBP: 0000000000000004 R08: ffffffff816fdabd R09: fffff520008adee5 R10: fffff520008adee5 R11: 1ffff920008adee4 R12: 0000000000000004 R13: dffffc0000000000 R14: ffff88807b1c6c00 R15: 1ffff1100f638dcf FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30c30000 CR3: 000000000d08e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: \u003CTASK\u003E __refcount_dec include/linux/refcount.h:344 [inline] refcount_dec include/linux/refcount.h:359 [inline] __sock_put include/net/sock.h:779 [inline] tcp_release_cb\u002B0x2d0/0x360 net/ipv4/tcp_output.c:1092 release_sock\u002B0xaf/0x1c0 net/core/sock.c:3468 sock_map_free\u002B0x219/0x2c0 net/core/sock_map.c:356 process_one_work\u002B0x81c/0xd10 kernel/workqueue.c:2289 worker_thread\u002B0xb14/0x1330 kernel/workqueue.c:2436 kthread\u002B0x266/0x300 kernel/kthread.c:376 ret_from_fork\u002B0x1f/0x30 arch/x86/entry/entry_64.S:306 \u003C/TASK\u003E",
  "published": "2025-09-15T14:15:36Z",
  "severity": "medium",
  "cvss": 4.7,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00118,
  "epssPercentile": 0.01739,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50259",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50259",
      "released": "2025-09-15T14:15:36Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50259",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50259",
      "released": "2025-09-15T14:15:36Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50259",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50259",
      "released": "2025-09-15T14:15:36Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}