{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-50045",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50045",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-06-18T11:01:46.233Z",
    "updatedAt": "2026-05-23T15:23:36.551Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "powerpc/pci: Fix get_phb_number() locking",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pci: Fix get_phb_number() locking\n\nThe recent change to get_phb_number() causes a DEBUG_ATOMIC_SLEEP\nwarning on some systems:\n\n  BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580\n  in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper\n  preempt_count: 1, expected: 0\n  RCU nest depth: 0, expected: 0\n  1 lock held by swapper/1:\n   #0: c157efb0 (hose_spinlock){+.+.}-{2:2}, at: pcibios_alloc_controller+0x64/0x220\n  Preemption disabled at:\n  [<00000000>] 0x0\n  CPU: 0 PID: 1 Comm: swapper Not tainted 5.19.0-yocto-standard+ #1\n  Call Trace:\n  [d101dc90] [c073b264] dump_stack_lvl+0x50/0x8c (unreliable)\n  [d101dcb0] [c0093b70] __might_resched+0x258/0x2a8\n  [d101dcd0] [c0d3e634] __mutex_lock+0x6c/0x6ec\n  [d101dd50] [c0a84174] of_alias_get_id+0x50/0xf4\n  [d101dd80] [c002ec78] pcibios_alloc_controller+0x1b8/0x220\n  [d101ddd0] [c140c9dc] pmac_pci_init+0x198/0x784\n  [d101de50] [c140852c] discover_phbs+0x30/0x4c\n  [d101de60] [c0007fd4] do_one_initcall+0x94/0x344\n  [d101ded0] [c1403b40] kernel_init_freeable+0x1a8/0x22c\n  [d101df10] [c00086e0] kernel_init+0x34/0x160\n  [d101df30] [c001b334] ret_from_kernel_thread+0x5c/0x64\n\nThis is because pcibios_alloc_controller() holds hose_spinlock but\nof_alias_get_id() takes of_mutex which can sleep.\n\nThe hose_spinlock protects the phb_bitmap, and also the hose_list, but\nit doesn't need to be held while get_phb_number() calls the OF routines,\nbecause those are only looking up information in the device tree.\n\nSo fix it by having get_phb_number() take the hose_spinlock itself, only\nwhere required, and then dropping the lock before returning.\npcibios_alloc_controller() then needs to take the lock again before the\nlist_add() but that's safe, the order of the list is not important.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a79e4395619c926ea7e828b2023c0fbe2776385b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6f75057c21eab12c6ccb7f06f859641a6edfab99"
            },
            {
              "version": "205826dcac3271ab04fb97d66f1b4f8219723259",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5db5ce0f1963c6c8275719a80cb65e9c98d32726"
            },
            {
              "version": "3ec50b8a0128359ff4ad4061a75c3322d0ab6ac9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ccb0a42d3f40c436295e0fef57ab613ae5b925a4"
            },
            {
              "version": "47a8fe1b154aa6d836582365b1c70684af8597e4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a868f771ee41c97a25a04b8c632a7f06689b307b"
            },
            {
              "version": "ef0f4eeaba2463a77ac5a4e42c30717deb3c7b62",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1d9e75c3d8cdf7c96a94cb77450d4ee070279e6a"
            },
            {
              "version": "f35c7f506fb96a23a1961c7314c5931ec8bc473e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "90f195c01a2e8d8da6281791617e21109719c981"
            },
            {
              "version": "0fe1e96fef0a5c53b4c0d1500d356f3906000f81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8d48562a2729742f767b0fdd994d6b2a56a49c63"
            },
            {
              "version": "e0274da3ac318296fed503422ccda98ce67e99cb",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.18.18",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.19"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5.10.137",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.138"
            },
            {
              "version": "5.15.61",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.63"
            },
            {
              "version": "5.19.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.19.4"
            }
          ]
        }
      ]
    }
  }
}