Vulnerability-Lookup

FKIE_CVE-2022-50423

Vulnerability from fkie_nvd - Published: 2025-10-01 12:15 - Updated: 2026-06-17 05:23

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() There is an use-after-free reported by KASAN: BUG: KASAN: use-after-free in acpi_ut_remove_reference+0x3b/0x82 Read of size 1 at addr ffff888112afc460 by task modprobe/2111 CPU: 0 PID: 2111 Comm: modprobe Not tainted 6.1.0-rc7-dirty Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), Call Trace: <TASK> kasan_report+0xae/0xe0 acpi_ut_remove_reference+0x3b/0x82 acpi_ut_copy_iobject_to_iobject+0x3be/0x3d5 acpi_ds_store_object_to_local+0x15d/0x3a0 acpi_ex_store+0x78d/0x7fd acpi_ex_opcode_1A_1T_1R+0xbe4/0xf9b acpi_ps_parse_aml+0x217/0x8d5 ... </TASK> The root cause of the problem is that the acpi_operand_object is freed when acpi_ut_walk_package_tree() fails in acpi_ut_copy_ipackage_to_ipackage(), lead to repeated release in acpi_ut_copy_iobject_to_iobject(). The problem was introduced by "8aa5e56eeb61" commit, this commit is to fix memory leak in acpi_ut_copy_iobject_to_iobject(), repeatedly adding remove operation, lead to "acpi_operand_object" used after free. Fix it by removing acpi_ut_remove_reference() in acpi_ut_copy_ipackage_to_ipackage(). acpi_ut_copy_ipackage_to_ipackage() is called to copy an internal package object into another internal package object, when it fails, the memory of acpi_operand_object should be freed by the caller.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/01f2c2052ea50fb9a8ce12e4e83aed0267934ef0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/02617006b5a46f2ea55ac61f5693c7afd7bf9276	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/02f237423c9c6a18e062de2d474f85d5659e4eb9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/133462d35dae95edb944af86b986d4c9dec59bd1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/470188b09e92d83c5a997f25f0e8fb8cd2bc3469	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6fde666278f91b85d71545a0ebbf41d8d7af8074	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c9125b643fc51b8e662f2f614096ceb45a0adbc3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dfdde4d5138bc023897033a5ac653a84e94805be	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/acpica/utcopy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "133462d35dae95edb944af86b986d4c9dec59bd1",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "02f237423c9c6a18e062de2d474f85d5659e4eb9",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "c9125b643fc51b8e662f2f614096ceb45a0adbc3",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "dfdde4d5138bc023897033a5ac653a84e94805be",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "02617006b5a46f2ea55ac61f5693c7afd7bf9276",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "6fde666278f91b85d71545a0ebbf41d8d7af8074",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "01f2c2052ea50fb9a8ce12e4e83aed0267934ef0",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "470188b09e92d83c5a997f25f0e8fb8cd2bc3469",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b3e98f0c4f996cd53b80bad71f0d7e4a2cf3a4e8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7af5504c102a378376101dbd160246b10a814dd0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e29a15484d7ea949e49ae7fb7e576a575da824a6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e2ab6731a36966d042a2d4dabd980496cd680f75",
              "versionType": "git"
            },
            {
              "lessThan": "3.11",
              "status": "affected",
              "version": "3.10.55",
              "versionType": "semver"
            },
            {
              "lessThan": "3.13",
              "status": "affected",
              "version": "3.12.29",
              "versionType": "semver"
            },
            {
              "lessThan": "3.15",
              "status": "affected",
              "version": "3.14.19",
              "versionType": "semver"
            },
            {
              "lessThan": "3.17",
              "status": "affected",
              "version": "3.16.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/acpica/utcopy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.17"
            },
            {
              "lessThan": "3.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5A516330-2A83-4603-8C0E-BBDFEECC27E9",
              "versionEndExcluding": "3.11",
              "versionStartIncluding": "3.10.55",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "25875AFE-CAEF-4D99-9B64-23F2B24C08D0",
              "versionEndExcluding": "3.13",
              "versionStartIncluding": "3.12.29",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5D53296D-7B6A-4B74-A72C-45082E6C8531",
              "versionEndExcluding": "3.15",
              "versionStartIncluding": "3.14.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D40F5AA2-90E2-40CE-A033-F1CB0E73BF7C",
              "versionEndExcluding": "4.9.337",
              "versionStartIncluding": "3.16.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1E7450AD-4739-46F0-B81B-C02E7B35A97B",
              "versionEndExcluding": "4.14.303",
              "versionStartIncluding": "4.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AE8904A3-99BE-4E49-9682-1F90A6373F4F",
              "versionEndExcluding": "4.19.270",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A0C0D95E-414A-445E-941B-3EF6A4D3A093",
              "versionEndExcluding": "5.4.229",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D05D31FC-BD74-4F9E-B1D8-9CED62BE6F65",
              "versionEndExcluding": "5.10.163",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "47237296-55D1-4ED4-8075-D00FC85A61EE",
              "versionEndExcluding": "5.15.86",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C720A569-3D93-4D77-95F6-E2B3A3267D9F",
              "versionEndExcluding": "6.0.16",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "77239F4B-6BB2-4B9E-A654-36A52396116C",
              "versionEndExcluding": "6.1.2",
              "versionStartIncluding": "6.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()\n\nThere is an use-after-free reported by KASAN:\n\n  BUG: KASAN: use-after-free in acpi_ut_remove_reference+0x3b/0x82\n  Read of size 1 at addr ffff888112afc460 by task modprobe/2111\n  CPU: 0 PID: 2111 Comm: modprobe Not tainted 6.1.0-rc7-dirty\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),\n  Call Trace:\n   \u003cTASK\u003e\n   kasan_report+0xae/0xe0\n   acpi_ut_remove_reference+0x3b/0x82\n   acpi_ut_copy_iobject_to_iobject+0x3be/0x3d5\n   acpi_ds_store_object_to_local+0x15d/0x3a0\n   acpi_ex_store+0x78d/0x7fd\n   acpi_ex_opcode_1A_1T_1R+0xbe4/0xf9b\n   acpi_ps_parse_aml+0x217/0x8d5\n   ...\n   \u003c/TASK\u003e\n\nThe root cause of the problem is that the acpi_operand_object\nis freed when acpi_ut_walk_package_tree() fails in\nacpi_ut_copy_ipackage_to_ipackage(), lead to repeated release in\nacpi_ut_copy_iobject_to_iobject(). The problem was introduced\nby \"8aa5e56eeb61\" commit, this commit is to fix memory leak in\nacpi_ut_copy_iobject_to_iobject(), repeatedly adding remove\noperation, lead to \"acpi_operand_object\" used after free.\n\nFix it by removing acpi_ut_remove_reference() in\nacpi_ut_copy_ipackage_to_ipackage(). acpi_ut_copy_ipackage_to_ipackage()\nis called to copy an internal package object into another internal\npackage object, when it fails, the memory of acpi_operand_object\nshould be freed by the caller."
    }
  ],
  "id": "CVE-2022-50423",
  "lastModified": "2026-06-17T05:23:31.393",
  "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"
      },
      {
        "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-50423",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-14T17:39:57.539191Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-10-01T12:15:33.683",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/01f2c2052ea50fb9a8ce12e4e83aed0267934ef0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/02617006b5a46f2ea55ac61f5693c7afd7bf9276"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/02f237423c9c6a18e062de2d474f85d5659e4eb9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/133462d35dae95edb944af86b986d4c9dec59bd1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/470188b09e92d83c5a997f25f0e8fb8cd2bc3469"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6fde666278f91b85d71545a0ebbf41d8d7af8074"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c9125b643fc51b8e662f2f614096ceb45a0adbc3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/dfdde4d5138bc023897033a5ac653a84e94805be"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

CVE-2022-50423 (GCVE-0-2022-50423)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:41 – Updated: 2026-08-05 08:58

Title

ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 17:39 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6641 records in the last 180 days details

References

9 references

URL	Tags
https://git.kernel.org/stable/c/133462d35dae95edb…
https://git.kernel.org/stable/c/02f237423c9c6a18e…
https://git.kernel.org/stable/c/c9125b643fc51b8e6…
https://git.kernel.org/stable/c/dfdde4d5138bc0238…
https://git.kernel.org/stable/c/02617006b5a46f2ea…
https://git.kernel.org/stable/c/6fde666278f91b85d…
https://git.kernel.org/stable/c/f51b2235e4f320edc…
https://git.kernel.org/stable/c/01f2c2052ea50fb9a…
https://git.kernel.org/stable/c/470188b09e92d83c5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < 133462d35dae95edb944af86b986d4c9dec59bd1 (git) Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < 02f237423c9c6a18e062de2d474f85d5659e4eb9 (git) Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < c9125b643fc51b8e662f2f614096ceb45a0adbc3 (git) Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < dfdde4d5138bc023897033a5ac653a84e94805be (git) Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < 02617006b5a46f2ea55ac61f5693c7afd7bf9276 (git) Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < 6fde666278f91b85d71545a0ebbf41d8d7af8074 (git) Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6 (git) Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < 01f2c2052ea50fb9a8ce12e4e83aed0267934ef0 (git) Affected: 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce , < 470188b09e92d83c5a997f25f0e8fb8cd2bc3469 (git) Affected: b3e98f0c4f996cd53b80bad71f0d7e4a2cf3a4e8 (git) Affected: 7af5504c102a378376101dbd160246b10a814dd0 (git) Affected: e29a15484d7ea949e49ae7fb7e576a575da824a6 (git) Affected: e2ab6731a36966d042a2d4dabd980496cd680f75 (git) Affected: 3.10.55 , < 3.11 (semver) Affected: 3.12.29 , < 3.13 (semver) Affected: 3.14.19 , < 3.15 (semver) Affected: 3.16.3 , < 3.17 (semver)
Linux	Linux	Affected: 3.17 Unaffected: 0 , < 3.17 (semver) Unaffected: 4.9.337 , ≤ 4.9.* (semver) Unaffected: 4.14.303 , ≤ 4.14.* (semver) Unaffected: 4.19.270 , ≤ 4.19.* (semver) Unaffected: 5.4.229 , ≤ 5.4.* (semver) Unaffected: 5.10.163 , ≤ 5.10.* (semver) Unaffected: 5.15.86 , ≤ 5.15.* (semver) Unaffected: 6.0.16 , ≤ 6.0.* (semver) Unaffected: 6.1.2 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-50423",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T17:39:57.539191Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T17:42:46.653Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/acpica/utcopy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "133462d35dae95edb944af86b986d4c9dec59bd1",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "02f237423c9c6a18e062de2d474f85d5659e4eb9",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "c9125b643fc51b8e662f2f614096ceb45a0adbc3",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "dfdde4d5138bc023897033a5ac653a84e94805be",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "02617006b5a46f2ea55ac61f5693c7afd7bf9276",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "6fde666278f91b85d71545a0ebbf41d8d7af8074",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "01f2c2052ea50fb9a8ce12e4e83aed0267934ef0",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "lessThan": "470188b09e92d83c5a997f25f0e8fb8cd2bc3469",
              "status": "affected",
              "version": "8aa5e56eeb61a099ea6519eb30ee399e1bc043ce",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b3e98f0c4f996cd53b80bad71f0d7e4a2cf3a4e8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7af5504c102a378376101dbd160246b10a814dd0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e29a15484d7ea949e49ae7fb7e576a575da824a6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e2ab6731a36966d042a2d4dabd980496cd680f75",
              "versionType": "git"
            },
            {
              "lessThan": "3.11",
              "status": "affected",
              "version": "3.10.55",
              "versionType": "semver"
            },
            {
              "lessThan": "3.13",
              "status": "affected",
              "version": "3.12.29",
              "versionType": "semver"
            },
            {
              "lessThan": "3.15",
              "status": "affected",
              "version": "3.14.19",
              "versionType": "semver"
            },
            {
              "lessThan": "3.17",
              "status": "affected",
              "version": "3.16.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/acpica/utcopy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.17"
            },
            {
              "lessThan": "3.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.337",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.303",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.270",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.229",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.163",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.86",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.2",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.10.55",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.12.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.14.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.16.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()\n\nThere is an use-after-free reported by KASAN:\n\n  BUG: KASAN: use-after-free in acpi_ut_remove_reference+0x3b/0x82\n  Read of size 1 at addr ffff888112afc460 by task modprobe/2111\n  CPU: 0 PID: 2111 Comm: modprobe Not tainted 6.1.0-rc7-dirty\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),\n  Call Trace:\n   \u003cTASK\u003e\n   kasan_report+0xae/0xe0\n   acpi_ut_remove_reference+0x3b/0x82\n   acpi_ut_copy_iobject_to_iobject+0x3be/0x3d5\n   acpi_ds_store_object_to_local+0x15d/0x3a0\n   acpi_ex_store+0x78d/0x7fd\n   acpi_ex_opcode_1A_1T_1R+0xbe4/0xf9b\n   acpi_ps_parse_aml+0x217/0x8d5\n   ...\n   \u003c/TASK\u003e\n\nThe root cause of the problem is that the acpi_operand_object\nis freed when acpi_ut_walk_package_tree() fails in\nacpi_ut_copy_ipackage_to_ipackage(), lead to repeated release in\nacpi_ut_copy_iobject_to_iobject(). The problem was introduced\nby \"8aa5e56eeb61\" commit, this commit is to fix memory leak in\nacpi_ut_copy_iobject_to_iobject(), repeatedly adding remove\noperation, lead to \"acpi_operand_object\" used after free.\n\nFix it by removing acpi_ut_remove_reference() in\nacpi_ut_copy_ipackage_to_ipackage(). acpi_ut_copy_ipackage_to_ipackage()\nis called to copy an internal package object into another internal\npackage object, when it fails, the memory of acpi_operand_object\nshould be freed by the caller."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The UAF is in the ACPICA AML interpreter (`acpi_ut_copy_ipackage_to_ipackage` during Store-to-Local), reached only via local ACPI table load or control-method evaluation; there is no network or adjacent-packet path into this code.\nAC:L - Once a firmware method Stores a shared package to a Local/Arg, the attacker can deterministically force the mid-walk AE_NO_MEMORY failure that triggers the double-free by exhausting memcg-accounted GFP_KERNEL allocations in the same process context that evaluates the method (e.g. container memory.max); no race or attacker-uncontrollable layout is required.\nPR:L - Unprivileged local users can drive ACPI method evaluation through world-readable ACPI/thermal/power sysfs attributes (0444) with no capability check; root-only interfaces such as configfs SSDT load or custom_method are not required on firmware that already Stores packages during those methods.\nUI:N - The attacker triggers evaluation directly via their own sysfs reads under memory pressure; no separate victim action such as mounting a filesystem is required.\nS:U - Impact is a host-kernel slab use-after-free within the same OS security authority; there is no VM escape, IOMMU bypass, or other cross-boundary compromise.\nC:H - The second `acpi_ut_remove_reference()` reads the already-freed Acpi-Operand object (as KASAN reported); reclaim/spray of that slab object yields an attacker-controlled read primitive, so confidentiality is High per UAF guidance.\nI:H - The same double-free of the package operand object is a classic heap UAF/double-free that enables spray-based arbitrary write and control-flow hijack primitives, so integrity is High.\nA:H - The bug was reported as a KASAN use-after-free and any second free or reuse of the dangling operand readily oopses/panics the kernel; per guidance any UAF is Availability High."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:58:45.759Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/133462d35dae95edb944af86b986d4c9dec59bd1"
        },
        {
          "url": "https://git.kernel.org/stable/c/02f237423c9c6a18e062de2d474f85d5659e4eb9"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9125b643fc51b8e662f2f614096ceb45a0adbc3"
        },
        {
          "url": "https://git.kernel.org/stable/c/dfdde4d5138bc023897033a5ac653a84e94805be"
        },
        {
          "url": "https://git.kernel.org/stable/c/02617006b5a46f2ea55ac61f5693c7afd7bf9276"
        },
        {
          "url": "https://git.kernel.org/stable/c/6fde666278f91b85d71545a0ebbf41d8d7af8074"
        },
        {
          "url": "https://git.kernel.org/stable/c/f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/01f2c2052ea50fb9a8ce12e4e83aed0267934ef0"
        },
        {
          "url": "https://git.kernel.org/stable/c/470188b09e92d83c5a997f25f0e8fb8cd2bc3469"
        }
      ],
      "title": "ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50423",
    "datePublished": "2025-10-01T11:41:56.083Z",
    "dateReserved": "2025-09-17T14:53:07.004Z",
    "dateUpdated": "2026-08-05T08:58:45.759Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted