{
  "cveId": "CVE-2022-50062",
  "url": "https://patchblox.com/security/cve/CVE-2022-50062",
  "summary": "CVE-2022-50062 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50062, released June 18, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: bgmac: Fix a BUG triggered by wrong bytes_c...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: bgmac: Fix a BUG triggered by wrong bytes_compl  On one of our machines we got:  kernel BUG at lib/dynamic_queue_limits.c:27! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM CPU: 0 PID: 1166 Comm: irq/41-bgmac Tainted: G        W  O    4.14.275-rt132 #1 Hardware name: BRCM XGS iProc task: ee3415c0 task.stack: ee32a000 PC is at dql_completed\u002B0x168/0x178 LR is at bgmac_poll\u002B0x18c/0x6d8 pc : [\u003Cc03b9430\u003E]    lr : [\u003Cc04b5a18\u003E]    psr: 800a0313 sp : ee32be14  ip : 000005ea  fp : 00000bd4 r10: ee558500  r9 : c0116298  r8 : 00000002 r7 : 00000000  r6 : ef128810  r5 : 01993267  r4 : 01993851 r3 : ee558000  r2 : 000070e1  r1 : 00000bd4  r0 : ee52c180 Flags: Nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none Control: 12c5387d  Table: 8e88c04a  DAC: 00000051 Process irq/41-bgmac (pid: 1166, stack limit = 0xee32a210) Stack: (0xee32be14 to 0xee32c000) be00:                                              ee558520 ee52c100 ef128810 be20: 00000000 00000002 c0116298 c04b5a18 00000000 c0a0c8c4 c0951780 00000040 be40: c0701780 ee558500 ee55d520 ef05b340 ef6f9780 ee558520 00000001 00000040 be60: ffffe000 c0a56878 ef6fa040 c0952040 0000012c c0528744 ef6f97b0 fffcfb6a be80: c0a04104 2eda8000 c0a0c4ec c0a0d368 ee32bf44 c0153534 ee32be98 ee32be98 bea0: ee32bea0 ee32bea0 ee32bea8 ee32bea8 00000000 c01462e4 ffffe000 ef6f22a8 bec0: ffffe000 00000008 ee32bee4 c0147430 ffffe000 c094a2a8 00000003 ffffe000 bee0: c0a54528 00208040 0000000c c0a0c8c4 c0a65980 c0124d3c 00000008 ee558520 bf00: c094a23c c0a02080 00000000 c07a9910 ef136970 ef136970 ee30a440 ef136900 bf20: ee30a440 00000001 ef136900 ee30a440 c016d990 00000000 c0108db0 c012500c bf40: ef136900 c016da14 ee30a464 ffffe000 00000001 c016dd14 00000000 c016db28 bf60: ffffe000 ee21a080 ee30a400 00000000 ee32a000 ee30a440 c016dbfc ee25fd70 bf80: ee21a09c c013edcc ee32a000 ee30a400 c013ec7c 00000000 00000000 00000000 bfa0: 00000000 00000000 00000000 c0108470 00000000 00000000 00000000 00000000 bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [\u003Cc03b9430\u003E] (dql_completed) from [\u003Cc04b5a18\u003E] (bgmac_poll\u002B0x18c/0x6d8) [\u003Cc04b5a18\u003E] (bgmac_poll) from [\u003Cc0528744\u003E] (net_rx_action\u002B0x1c4/0x494) [\u003Cc0528744\u003E] (net_rx_action) from [\u003Cc0124d3c\u003E] (do_current_softirqs\u002B0x1ec/0x43c) [\u003Cc0124d3c\u003E] (do_current_softirqs) from [\u003Cc012500c\u003E] (__local_bh_enable\u002B0x80/0x98) [\u003Cc012500c\u003E] (__local_bh_enable) from [\u003Cc016da14\u003E] (irq_forced_thread_fn\u002B0x84/0x98) [\u003Cc016da14\u003E] (irq_forced_thread_fn) from [\u003Cc016dd14\u003E] (irq_thread\u002B0x118/0x1c0) [\u003Cc016dd14\u003E] (irq_thread) from [\u003Cc013edcc\u003E] (kthread\u002B0x150/0x158) [\u003Cc013edcc\u003E] (kthread) from [\u003Cc0108470\u003E] (ret_from_fork\u002B0x14/0x24) Code: a83f15e0 0200001a 0630a0e1 c3ffffea (f201f0e7)  The issue seems similar to commit 90b3b339364c (\u0022net: hisilicon: Fix a BUG trigered by wrong bytes_compl\u0022) and potentially introduced by commit b38c83dd0866 (\u0022bgmac: simplify tx ring index handling\u0022).  If there is an RX interrupt between setting ring-\u003Eend and netdev_sent_queue() we can hit the BUG_ON as bgmac_dma_tx_free() can miscalculate the queue size while called from bgmac_poll().  The machine which triggered the BUG runs a v4.14 RT kernel - but the issue seems present in mainline too.",
  "published": "2025-06-18T11:15:34Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00443,
  "epssPercentile": 0.38756,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-50062",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50062",
      "released": "2025-06-18T11:15:34Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-50062",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50062",
      "released": "2025-06-18T11:15:34Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-50062",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50062",
      "released": "2025-06-18T11:15:34Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}