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CVE-2022-50411 (GCVE-0-2022-50411)

Vulnerability from cvelistv5 – Published: 2025-09-18 16:03 – Updated: 2026-08-05 08:58
VLAI
Title
ACPICA: Fix error code path in acpi_ds_call_control_method()
Summary
In the Linux kernel, the following vulnerability has been resolved: ACPICA: Fix error code path in acpi_ds_call_control_method() A use-after-free in acpi_ps_parse_aml() after a failing invocaion of acpi_ds_call_control_method() is reported by KASAN [1] and code inspection reveals that next_walk_state pushed to the thread by acpi_ds_create_walk_state() is freed on errors, but it is not popped from the thread beforehand. Thus acpi_ds_get_current_walk_state() called by acpi_ps_parse_aml() subsequently returns it as the new walk state which is incorrect. To address this, make acpi_ds_call_control_method() call acpi_ds_pop_walk_state() to pop next_walk_state from the thread before returning an error.
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 19:08 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 38e251d356a01b61a86cb35213cafd7e8fe7090c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f520d181477ec29a496c0b3bbfbdb7e2606c2713 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2deb42c4f9776e59bee247c14af9c5e8c05ca9a6 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9ef353c92f9d04c88de3af1a46859c1fb76db0f8 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b0b83d3f3ffa96e8395c56b83d6197e184902a34 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5777432ebaaf797e24f059979b42df3139967163 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0462fec709d51762ba486245bc344f44cc6cfa97 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 799881db3e03b5e98fe6a900d9d7de8c7d61e7ee (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 404ec60438add1afadaffaed34bb5fe4ddcadd40 (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (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)
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    "datePublished": "2025-09-18T16:03:55.437Z",
    "dateReserved": "2025-09-17T14:53:07.002Z",
    "dateUpdated": "2026-08-05T08:58:40.374Z",
    "state": "PUBLISHED"
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    "epss": {
      "cve": "CVE-2022-50411",
      "date": "2026-09-09",
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    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50411\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-18T16:15:44.380\",\"lastModified\":\"2026-06-17T05:23:29.320\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nACPICA: Fix error code path in acpi_ds_call_control_method()\\n\\nA use-after-free in acpi_ps_parse_aml() after a failing invocaion of\\nacpi_ds_call_control_method() is reported by KASAN [1] and code\\ninspection reveals that next_walk_state pushed to the thread by\\nacpi_ds_create_walk_state() is freed on errors, but it is not popped\\nfrom the thread beforehand.  Thus acpi_ds_get_current_walk_state()\\ncalled by acpi_ps_parse_aml() subsequently returns it as the new\\nwalk state which is incorrect.\\n\\nTo address this, make acpi_ds_call_control_method() call\\nacpi_ds_pop_walk_state() to pop next_walk_state from the thread before\\nreturning an 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:49:44+00:00",
      "cve": "CVE-2022-50411",
      "id": "CVE-2022-50411",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ACPICA: Fix error code path in acpi_ds_call_control_method()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50411.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-09-04T00:34:00Z",
      "cve": "CVE-2022-50411",
      "id": "CVE-2022-50411",
      "initial_release_date": "2025-09-18T23:42:59Z",
      "product_status:known_affected": "540",
      "product_status:known_not_affected": "176",
      "product_status:recommended": "243",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50411",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50411.json",
      "version": "48"
    },
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The vulnerable ACPICA interpreter path is reached through local ACPI control-method evaluation (sysfs reads, module load, hotplug/GPE handling), not via network packets or adjacent-link protocols.\\nAC:L - Once a nested method call hits the failing allocation/init path, the use-after-free is deterministic; an attacker can induce memory pressure and repeatedly trigger method evaluation, so success does not depend on conditions outside their control.\\nPR:L - Unprivileged local users can trigger ACPI method evaluation via world-readable interfaces such as battery/thermal/lid sysfs and can create memory pressure to hit the error path; root-only custom AML loading is not required.\\nUI:N - Exploitation requires only attacker-controlled local actions; no separate victim user interaction is needed.\\nS:U - Impact is confined to the host kernel\u0027s privilege boundary (local privilege escalation/DoS); this is not a VM escape or other cross-authority boundary crossing.\\nC:H - The freed walk_state remains on the thread list and is reused by acpi_ps_parse_aml()/error handling, giving a use-after-free that can be leveraged for arbitrary kernel memory disclosure.\\nI:H - 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Thus acpi_ds_get_current_walk_state()\\ncalled by acpi_ps_parse_aml() subsequently returns it as the new\\nwalk state which is incorrect.\\n\\nTo address this, make acpi_ds_call_control_method() call\\nacpi_ds_pop_walk_state() to pop next_walk_state from the thread before\\nreturning an error.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.337\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.303\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.270\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.229\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.163\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.86\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.16\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.2\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2\", \"versionStartIncluding\": \"2.6.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:58:40.374Z\"}}}",
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