{
  "cveId": "CVE-2022-50163",
  "url": "https://patchblox.com/security/cve/CVE-2022-50163",
  "summary": "CVE-2022-50163 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50163, released June 18, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ax25: fix incorrect dev_tracker usage",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ax25: fix incorrect dev_tracker usage  While investigating a separate rose issue [1], and enabling CONFIG_NET_DEV_REFCNT_TRACKER=y, Bernard reported an orthogonal ax25 issue [2]  An ax25_dev can be used by one (or many) struct ax25_cb. We thus need different dev_tracker, one per struct ax25_cb.  After this patch is applied, we are able to focus on rose.  [1] https://lore.kernel.org/netdev/fb7544a1-f42e-9254-18cc-c9b071f4ca70@free.fr/  [2] [  205.798723] reference already released. [  205.798732] allocated in: [  205.798734]  ax25_bind\u002B0x1a2/0x230 [ax25] [  205.798747]  __sys_bind\u002B0xea/0x110 [  205.798753]  __x64_sys_bind\u002B0x18/0x20 [  205.798758]  do_syscall_64\u002B0x5c/0x80 [  205.798763]  entry_SYSCALL_64_after_hwframe\u002B0x44/0xae [  205.798768] freed in: [  205.798770]  ax25_release\u002B0x115/0x370 [ax25] [  205.798778]  __sock_release\u002B0x42/0xb0 [  205.798782]  sock_close\u002B0x15/0x20 [  205.798785]  __fput\u002B0x9f/0x260 [  205.798789]  ____fput\u002B0xe/0x10 [  205.798792]  task_work_run\u002B0x64/0xa0 [  205.798798]  exit_to_user_mode_prepare\u002B0x18b/0x190 [  205.798804]  syscall_exit_to_user_mode\u002B0x26/0x40 [  205.798808]  do_syscall_64\u002B0x69/0x80 [  205.798812]  entry_SYSCALL_64_after_hwframe\u002B0x44/0xae [  205.798827] ------------[ cut here ]------------ [  205.798829] WARNING: CPU: 2 PID: 2605 at lib/ref_tracker.c:136 ref_tracker_free.cold\u002B0x60/0x81 [  205.798837] Modules linked in: rose netrom mkiss ax25 rfcomm cmac algif_hash algif_skcipher af_alg bnep snd_hda_codec_hdmi nls_iso8859_1 i915 rtw88_8821ce rtw88_8821c x86_pkg_temp_thermal rtw88_pci intel_powerclamp rtw88_core snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio coretemp snd_hda_intel kvm_intel snd_intel_dspcfg mac80211 snd_hda_codec kvm i2c_algo_bit drm_buddy drm_dp_helper btusb drm_kms_helper snd_hwdep btrtl snd_hda_core btbcm joydev crct10dif_pclmul btintel crc32_pclmul ghash_clmulni_intel mei_hdcp btmtk intel_rapl_msr aesni_intel bluetooth input_leds snd_pcm crypto_simd syscopyarea processor_thermal_device_pci_legacy sysfillrect cryptd intel_soc_dts_iosf snd_seq sysimgblt ecdh_generic fb_sys_fops rapl libarc4 processor_thermal_device intel_cstate processor_thermal_rfim cec snd_timer ecc snd_seq_device cfg80211 processor_thermal_mbox mei_me processor_thermal_rapl mei rc_core at24 snd intel_pch_thermal intel_rapl_common ttm soundcore int340x_thermal_zone video [  205.798948]  mac_hid acpi_pad sch_fq_codel ipmi_devintf ipmi_msghandler drm msr parport_pc ppdev lp parport ramoops pstore_blk reed_solomon pstore_zone efi_pstore ip_tables x_tables autofs4 hid_generic usbhid hid i2c_i801 i2c_smbus r8169 xhci_pci ahci libahci realtek lpc_ich xhci_pci_renesas [last unloaded: ax25] [  205.798992] CPU: 2 PID: 2605 Comm: ax25ipd Not tainted 5.18.11-F6BVP #3 [  205.798996] Hardware name: To be filled by O.E.M. To be filled by O.E.M./CK3, BIOS 5.011 09/16/2020 [  205.798999] RIP: 0010:ref_tracker_free.cold\u002B0x60/0x81 [  205.799005] Code: e8 d2 01 9b ff 83 7b 18 00 74 14 48 c7 c7 2f d7 ff 98 e8 10 6e fc ff 8b 7b 18 e8 b8 01 9b ff 4c 89 ee 4c 89 e7 e8 5d fd 07 00 \u003C0f\u003E 0b b8 ea ff ff ff e9 30 05 9b ff 41 0f b6 f7 48 c7 c7 a0 fa 4e [  205.799008] RSP: 0018:ffffaf5281073958 EFLAGS: 00010286 [  205.799011] RAX: 0000000080000000 RBX: ffff9a0bd687ebe0 RCX: 0000000000000000 [  205.799014] RDX: 0000000000000001 RSI: 0000000000000282 RDI: 00000000ffffffff [  205.799016] RBP: ffffaf5281073a10 R08: 0000000000000003 R09: fffffffffffd5618 [  205.799019] R10: 0000000000ffff10 R11: 000000000000000f R12: ffff9a0bc53384d0 [  205.799022] R13: 0000000000000282 R14: 00000000ae000001 R15: 0000000000000001 [  205.799024] FS:  0000000000000000(0000) GS:ffff9a0d0f300000(0000) knlGS:0000000000000000 [  205.799028] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [  205.799031] CR2: 00007ff6b8311554 CR3: 000000001ac10004 CR4: 00000000001706e0 [  205.799033] Call Trace: [  205.799035]  \u003CTASK\u003E [  205.799038]  ? ax25_dev_device_down\u002B0xd9/ ---truncated---",
  "published": "2025-06-18T11:15:46Z",
  "severity": "Important",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00256,
  "epssPercentile": 0.17329,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-50163",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.19.6-1",
      "fix": "DEBIAN-CVE-2022-50163",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50163",
      "released": "2025-06-18T11:15:46Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.19.6-1",
      "fix": "DEBIAN-CVE-2022-50163",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50163",
      "released": "2025-06-18T11:15:46Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.19.6-1",
      "fix": "DEBIAN-CVE-2022-50163",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50163",
      "released": "2025-06-18T11:15:46Z"
    }
  ],
  "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"
  }
}