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CVE-2022-50320 (GCVE-0-2022-50320)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:48 – Updated: 2026-05-11 19:17
VLAI
Title
ACPI: tables: FPDT: Don't call acpi_os_map_memory() on invalid phys address
Summary
In the Linux kernel, the following vulnerability has been resolved: ACPI: tables: FPDT: Don't call acpi_os_map_memory() on invalid phys address On a Packard Bell Dot SC (Intel Atom N2600 model) there is a FPDT table which contains invalid physical addresses, with high bits set which fall outside the range of the CPU-s supported physical address range. Calling acpi_os_map_memory() on such an invalid phys address leads to the below WARN_ON in ioremap triggering resulting in an oops/stacktrace. Add code to verify the physical address before calling acpi_os_map_memory() to fix / avoid the oops. [ 1.226900] ioremap: invalid physical address 3001000000000000 [ 1.226949] ------------[ cut here ]------------ [ 1.226962] WARNING: CPU: 1 PID: 1 at arch/x86/mm/ioremap.c:200 __ioremap_caller.cold+0x43/0x5f [ 1.226996] Modules linked in: [ 1.227016] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc3+ #490 [ 1.227029] Hardware name: Packard Bell dot s/SJE01_CT, BIOS V1.10 07/23/2013 [ 1.227038] RIP: 0010:__ioremap_caller.cold+0x43/0x5f [ 1.227054] Code: 96 00 00 e9 f8 af 24 ff 89 c6 48 c7 c7 d8 0c 84 99 e8 6a 96 00 00 e9 76 af 24 ff 48 89 fe 48 c7 c7 a8 0c 84 99 e8 56 96 00 00 <0f> 0b e9 60 af 24 ff 48 8b 34 24 48 c7 c7 40 0d 84 99 e8 3f 96 00 [ 1.227067] RSP: 0000:ffffb18c40033d60 EFLAGS: 00010286 [ 1.227084] RAX: 0000000000000032 RBX: 3001000000000000 RCX: 0000000000000000 [ 1.227095] RDX: 0000000000000001 RSI: 00000000ffffdfff RDI: 00000000ffffffff [ 1.227105] RBP: 3001000000000000 R08: 0000000000000000 R09: ffffb18c40033c18 [ 1.227115] R10: 0000000000000003 R11: ffffffff99d62fe8 R12: 0000000000000008 [ 1.227124] R13: 0003001000000000 R14: 0000000000001000 R15: 3001000000000000 [ 1.227135] FS: 0000000000000000(0000) GS:ffff913a3c080000(0000) knlGS:0000000000000000 [ 1.227146] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.227156] CR2: 0000000000000000 CR3: 0000000018c26000 CR4: 00000000000006e0 [ 1.227167] Call Trace: [ 1.227176] <TASK> [ 1.227185] ? acpi_os_map_iomem+0x1c9/0x1e0 [ 1.227215] ? kmem_cache_alloc_trace+0x187/0x370 [ 1.227254] acpi_os_map_iomem+0x1c9/0x1e0 [ 1.227288] acpi_init_fpdt+0xa8/0x253 [ 1.227308] ? acpi_debugfs_init+0x1f/0x1f [ 1.227339] do_one_initcall+0x5a/0x300 [ 1.227406] ? rcu_read_lock_sched_held+0x3f/0x80 [ 1.227442] kernel_init_freeable+0x28b/0x2cc [ 1.227512] ? rest_init+0x170/0x170 [ 1.227538] kernel_init+0x16/0x140 [ 1.227552] ret_from_fork+0x1f/0x30 [ 1.227639] </TASK> [ 1.227647] irq event stamp: 186819 [ 1.227656] hardirqs last enabled at (186825): [<ffffffff98184a6e>] __up_console_sem+0x5e/0x70 [ 1.227672] hardirqs last disabled at (186830): [<ffffffff98184a53>] __up_console_sem+0x43/0x70 [ 1.227686] softirqs last enabled at (186576): [<ffffffff980fbc9d>] __irq_exit_rcu+0xed/0x160 [ 1.227701] softirqs last disabled at (186569): [<ffffffff980fbc9d>] __irq_exit_rcu+0xed/0x160 [ 1.227715] ---[ end trace 0000000000000000 ]---
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d1eb86e59be09c12447fcb959783cbc70a9bec01 , < 30eca146c89d216dda95868ce00a2d35cf73d5a4 (git)
Affected: d1eb86e59be09c12447fcb959783cbc70a9bec01 , < 90bfc9ae875dfbed2e6089516520204cd431dba3 (git)
Affected: d1eb86e59be09c12447fcb959783cbc70a9bec01 , < 16046a716c8e1f447909bec9b478d58e6e25e513 (git)
Affected: d1eb86e59be09c12447fcb959783cbc70a9bec01 , < 211391bf04b3c74e250c566eeff9cf808156c693 (git)
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Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: tables: FPDT: Don\u0027t call acpi_os_map_memory() on invalid phys address\n\nOn a Packard Bell Dot SC (Intel Atom N2600 model) there is a FPDT table\nwhich contains invalid physical addresses, with high bits set which fall\noutside the range of the CPU-s supported physical address range.\n\nCalling acpi_os_map_memory() on such an invalid phys address leads to\nthe below WARN_ON in ioremap triggering resulting in an oops/stacktrace.\n\nAdd code to verify the physical address before calling acpi_os_map_memory()\nto fix / avoid the oops.\n\n[    1.226900] ioremap: invalid physical address 3001000000000000\n[    1.226949] ------------[ cut here ]------------\n[    1.226962] WARNING: CPU: 1 PID: 1 at arch/x86/mm/ioremap.c:200 __ioremap_caller.cold+0x43/0x5f\n[    1.226996] Modules linked in:\n[    1.227016] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc3+ #490\n[    1.227029] Hardware name: Packard Bell dot s/SJE01_CT, BIOS V1.10 07/23/2013\n[    1.227038] RIP: 0010:__ioremap_caller.cold+0x43/0x5f\n[    1.227054] Code: 96 00 00 e9 f8 af 24 ff 89 c6 48 c7 c7 d8 0c 84 99 e8 6a 96 00 00 e9 76 af 24 ff 48 89 fe 48 c7 c7 a8 0c 84 99 e8 56 96 00 00 \u003c0f\u003e 0b e9 60 af 24 ff 48 8b 34 24 48 c7 c7 40 0d 84 99 e8 3f 96 00\n[    1.227067] RSP: 0000:ffffb18c40033d60 EFLAGS: 00010286\n[    1.227084] RAX: 0000000000000032 RBX: 3001000000000000 RCX: 0000000000000000\n[    1.227095] RDX: 0000000000000001 RSI: 00000000ffffdfff RDI: 00000000ffffffff\n[    1.227105] RBP: 3001000000000000 R08: 0000000000000000 R09: ffffb18c40033c18\n[    1.227115] R10: 0000000000000003 R11: ffffffff99d62fe8 R12: 0000000000000008\n[    1.227124] R13: 0003001000000000 R14: 0000000000001000 R15: 3001000000000000\n[    1.227135] FS:  0000000000000000(0000) GS:ffff913a3c080000(0000) knlGS:0000000000000000\n[    1.227146] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[    1.227156] CR2: 0000000000000000 CR3: 0000000018c26000 CR4: 00000000000006e0\n[    1.227167] Call Trace:\n[    1.227176]  \u003cTASK\u003e\n[    1.227185]  ? acpi_os_map_iomem+0x1c9/0x1e0\n[    1.227215]  ? kmem_cache_alloc_trace+0x187/0x370\n[    1.227254]  acpi_os_map_iomem+0x1c9/0x1e0\n[    1.227288]  acpi_init_fpdt+0xa8/0x253\n[    1.227308]  ? acpi_debugfs_init+0x1f/0x1f\n[    1.227339]  do_one_initcall+0x5a/0x300\n[    1.227406]  ? rcu_read_lock_sched_held+0x3f/0x80\n[    1.227442]  kernel_init_freeable+0x28b/0x2cc\n[    1.227512]  ? rest_init+0x170/0x170\n[    1.227538]  kernel_init+0x16/0x140\n[    1.227552]  ret_from_fork+0x1f/0x30\n[    1.227639]  \u003c/TASK\u003e\n[    1.227647] irq event stamp: 186819\n[    1.227656] hardirqs last  enabled at (186825): [\u003cffffffff98184a6e\u003e] __up_console_sem+0x5e/0x70\n[    1.227672] hardirqs last disabled at (186830): [\u003cffffffff98184a53\u003e] __up_console_sem+0x43/0x70\n[    1.227686] softirqs last  enabled at (186576): [\u003cffffffff980fbc9d\u003e] __irq_exit_rcu+0xed/0x160\n[    1.227701] softirqs last disabled at (186569): [\u003cffffffff980fbc9d\u003e] __irq_exit_rcu+0xed/0x160\n[    1.227715] ---[ end trace 0000000000000000 ]---"
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    "dateReserved": "2025-09-15T14:18:36.814Z",
    "dateUpdated": "2026-05-11T19:17:02.028Z",
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        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: tables: FPDT: Don\u0027t call acpi_os_map_memory() on invalid phys address\n\nOn a Packard Bell Dot SC (Intel Atom N2600 model) there is a FPDT table\nwhich contains invalid physical addresses, with high bits set which fall\noutside the range of the CPU-s supported physical address range.\n\nCalling acpi_os_map_memory() on such an invalid phys address leads to\nthe below WARN_ON in ioremap triggering resulting in an oops/stacktrace.\n\nAdd code to verify the physical address before calling acpi_os_map_memory()\nto fix / avoid the oops.\n\n[    1.226900] ioremap: invalid physical address 3001000000000000\n[    1.226949] ------------[ cut here ]------------\n[    1.226962] WARNING: CPU: 1 PID: 1 at arch/x86/mm/ioremap.c:200 __ioremap_caller.cold+0x43/0x5f\n[    1.226996] Modules linked in:\n[    1.227016] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc3+ #490\n[    1.227029] Hardware name: Packard Bell dot s/SJE01_CT, BIOS V1.10 07/23/2013\n[    1.227038] RIP: 0010:__ioremap_caller.cold+0x43/0x5f\n[    1.227054] Code: 96 00 00 e9 f8 af 24 ff 89 c6 48 c7 c7 d8 0c 84 99 e8 6a 96 00 00 e9 76 af 24 ff 48 89 fe 48 c7 c7 a8 0c 84 99 e8 56 96 00 00 \u003c0f\u003e 0b e9 60 af 24 ff 48 8b 34 24 48 c7 c7 40 0d 84 99 e8 3f 96 00\n[    1.227067] RSP: 0000:ffffb18c40033d60 EFLAGS: 00010286\n[    1.227084] RAX: 0000000000000032 RBX: 3001000000000000 RCX: 0000000000000000\n[    1.227095] RDX: 0000000000000001 RSI: 00000000ffffdfff RDI: 00000000ffffffff\n[    1.227105] RBP: 3001000000000000 R08: 0000000000000000 R09: ffffb18c40033c18\n[    1.227115] R10: 0000000000000003 R11: ffffffff99d62fe8 R12: 0000000000000008\n[    1.227124] R13: 0003001000000000 R14: 0000000000001000 R15: 3001000000000000\n[    1.227135] FS:  0000000000000000(0000) GS:ffff913a3c080000(0000) knlGS:0000000000000000\n[    1.227146] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[    1.227156] CR2: 0000000000000000 CR3: 0000000018c26000 CR4: 00000000000006e0\n[    1.227167] Call Trace:\n[    1.227176]  \u003cTASK\u003e\n[    1.227185]  ? acpi_os_map_iomem+0x1c9/0x1e0\n[    1.227215]  ? kmem_cache_alloc_trace+0x187/0x370\n[    1.227254]  acpi_os_map_iomem+0x1c9/0x1e0\n[    1.227288]  acpi_init_fpdt+0xa8/0x253\n[    1.227308]  ? acpi_debugfs_init+0x1f/0x1f\n[    1.227339]  do_one_initcall+0x5a/0x300\n[    1.227406]  ? rcu_read_lock_sched_held+0x3f/0x80\n[    1.227442]  kernel_init_freeable+0x28b/0x2cc\n[    1.227512]  ? rest_init+0x170/0x170\n[    1.227538]  kernel_init+0x16/0x140\n[    1.227552]  ret_from_fork+0x1f/0x30\n[    1.227639]  \u003c/TASK\u003e\n[    1.227647] irq event stamp: 186819\n[    1.227656] hardirqs last  enabled at (186825): [\u003cffffffff98184a6e\u003e] __up_console_sem+0x5e/0x70\n[    1.227672] hardirqs last disabled at (186830): [\u003cffffffff98184a53\u003e] __up_console_sem+0x43/0x70\n[    1.227686] softirqs last  enabled at (186576): [\u003cffffffff980fbc9d\u003e] __irq_exit_rcu+0xed/0x160\n[    1.227701] softirqs last disabled at (186569): [\u003cffffffff980fbc9d\u003e] __irq_exit_rcu+0xed/0x160\n[    1.227715] ---[ end trace 0000000000000000 ]---"
          }
        ],
        "id": "CVE-2022-50320",
        "lastModified": "2026-06-17T05:23:13.750",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-09-15T15:15:43.997",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/16046a716c8e1f447909bec9b478d58e6e25e513"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/211391bf04b3c74e250c566eeff9cf808156c693"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/30eca146c89d216dda95868ce00a2d35cf73d5a4"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/90bfc9ae875dfbed2e6089516520204cd431dba3"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:45:32+00:00",
      "cve": "CVE-2022-50320",
      "id": "CVE-2022-50320",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "156",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ACPI: tables: FPDT: Don\u0027t call acpi_os_map_memory() on invalid phys address",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50320.json",
      "version": "3"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.