{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50411", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:53:07.002Z", "datePublished": "2025-09-18T16:03:55.437Z", "dateUpdated": "2026-08-05T08:58:40.374Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:58:40.374Z" }, "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 error." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - 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's 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 - Continued use of the freed walk_state includes write-side cleanup paths (scope clear, terminate, parse cleanup), enabling heap corruption and control-flow hijacking primitives typical of kernel UAFs.\nA:H - The UAF causes kernel oops/panic (as shown by the KASAN report during modprobe acpiphp_ibm) and remains crashable even without a full exploit." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/acpi/acpica/dsmethod.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "38e251d356a01b61a86cb35213cafd7e8fe7090c", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f520d181477ec29a496c0b3bbfbdb7e2606c2713", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2deb42c4f9776e59bee247c14af9c5e8c05ca9a6", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9ef353c92f9d04c88de3af1a46859c1fb76db0f8", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "b0b83d3f3ffa96e8395c56b83d6197e184902a34", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "5777432ebaaf797e24f059979b42df3139967163", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "0462fec709d51762ba486245bc344f44cc6cfa97", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "799881db3e03b5e98fe6a900d9d7de8c7d61e7ee", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "404ec60438add1afadaffaed34bb5fe4ddcadd40", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/acpi/acpica/dsmethod.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.337", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.86", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.0.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/38e251d356a01b61a86cb35213cafd7e8fe7090c" }, { "url": "https://git.kernel.org/stable/c/f520d181477ec29a496c0b3bbfbdb7e2606c2713" }, { "url": "https://git.kernel.org/stable/c/2deb42c4f9776e59bee247c14af9c5e8c05ca9a6" }, { "url": "https://git.kernel.org/stable/c/9ef353c92f9d04c88de3af1a46859c1fb76db0f8" }, { "url": "https://git.kernel.org/stable/c/b0b83d3f3ffa96e8395c56b83d6197e184902a34" }, { "url": "https://git.kernel.org/stable/c/5777432ebaaf797e24f059979b42df3139967163" }, { "url": "https://git.kernel.org/stable/c/0462fec709d51762ba486245bc344f44cc6cfa97" }, { "url": "https://git.kernel.org/stable/c/799881db3e03b5e98fe6a900d9d7de8c7d61e7ee" }, { "url": "https://git.kernel.org/stable/c/404ec60438add1afadaffaed34bb5fe4ddcadd40" } ], "title": "ACPICA: Fix error code path in acpi_ds_call_control_method()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-50411", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-01-14T19:08:58.766332Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T19:13:09.051Z" } } ] } }