{
  "cveId": "CVE-2022-50045",
  "url": "https://patchblox.com/security/cve/CVE-2022-50045",
  "summary": "CVE-2022-50045 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50045, 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:  powerpc/pci: Fix get_phb_number() locking  The r...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  powerpc/pci: Fix get_phb_number() locking  The recent change to get_phb_number() causes a DEBUG_ATOMIC_SLEEP warning on some systems:    BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580   in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper   preempt_count: 1, expected: 0   RCU nest depth: 0, expected: 0   1 lock held by swapper/1:    #0: c157efb0 (hose_spinlock){\u002B.\u002B.}-{2:2}, at: pcibios_alloc_controller\u002B0x64/0x220   Preemption disabled at:   [\u003C00000000\u003E] 0x0   CPU: 0 PID: 1 Comm: swapper Not tainted 5.19.0-yocto-standard\u002B #1   Call Trace:   [d101dc90] [c073b264] dump_stack_lvl\u002B0x50/0x8c (unreliable)   [d101dcb0] [c0093b70] __might_resched\u002B0x258/0x2a8   [d101dcd0] [c0d3e634] __mutex_lock\u002B0x6c/0x6ec   [d101dd50] [c0a84174] of_alias_get_id\u002B0x50/0xf4   [d101dd80] [c002ec78] pcibios_alloc_controller\u002B0x1b8/0x220   [d101ddd0] [c140c9dc] pmac_pci_init\u002B0x198/0x784   [d101de50] [c140852c] discover_phbs\u002B0x30/0x4c   [d101de60] [c0007fd4] do_one_initcall\u002B0x94/0x344   [d101ded0] [c1403b40] kernel_init_freeable\u002B0x1a8/0x22c   [d101df10] [c00086e0] kernel_init\u002B0x34/0x160   [d101df30] [c001b334] ret_from_kernel_thread\u002B0x5c/0x64  This is because pcibios_alloc_controller() holds hose_spinlock but of_alias_get_id() takes of_mutex which can sleep.  The hose_spinlock protects the phb_bitmap, and also the hose_list, but it doesn\u0027t need to be held while get_phb_number() calls the OF routines, because those are only looking up information in the device tree.  So fix it by having get_phb_number() take the hose_spinlock itself, only where required, and then dropping the lock before returning. pcibios_alloc_controller() then needs to take the lock again before the list_add() but that\u0027s safe, the order of the list is not important.",
  "published": "2025-06-18T11:15:33Z",
  "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": 0.00147,
  "epssPercentile": 0.03949,
  "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-2022-50045",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50045",
      "released": "2025-06-18T11:15:33Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-50045",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50045",
      "released": "2025-06-18T11:15:33Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-50045",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50045",
      "released": "2025-06-18T11:15:33Z"
    }
  ],
  "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"
  }
}