CVE-2022-50382 (GCVE-0-2022-50382)
Vulnerability from cvelistv5
Published
2025-09-18 13:33
Modified
2025-09-18 13:33
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
padata: Always leave BHs disabled when running ->parallel()
A deadlock can happen when an overloaded system runs ->parallel() in the
context of the current task:
padata_do_parallel
->parallel()
pcrypt_aead_enc/dec
padata_do_serial
spin_lock(&reorder->lock) // BHs still enabled
<interrupt>
...
__do_softirq
...
padata_do_serial
spin_lock(&reorder->lock)
It's a bug for BHs to be on in _do_serial as Steffen points out, so
ensure they're off in the "current task" case like they are in
padata_parallel_worker to avoid this situation.
References
Impacted products
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"4611ce22468895acd61fee9ac1da810d60617d9a", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "kernel/padata.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "5.8" }, { "lessThan": "5.8", "status": "unaffected", "version": "0", "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": "5.10.163", "versionStartIncluding": "5.8", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.86", "versionStartIncluding": "5.8", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.0.16", "versionStartIncluding": "5.8", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1.2", "versionStartIncluding": "5.8", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.2", "versionStartIncluding": "5.8", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npadata: Always leave BHs disabled when running -\u003eparallel()\n\nA deadlock can happen when an overloaded system runs -\u003eparallel() in the\ncontext of the current task:\n\n padata_do_parallel\n -\u003eparallel()\n pcrypt_aead_enc/dec\n padata_do_serial\n spin_lock(\u0026reorder-\u003elock) // BHs still enabled\n \u003cinterrupt\u003e\n ...\n __do_softirq\n ...\n padata_do_serial\n spin_lock(\u0026reorder-\u003elock)\n\nIt\u0027s a bug for BHs to be on in _do_serial as Steffen points out, so\nensure they\u0027re off in the \"current task\" case like they are in\npadata_parallel_worker to avoid this situation." } ], "providerMetadata": { "dateUpdated": "2025-09-18T13:33:04.193Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/8e0681dd4eee029eb1d533d06993f7cb091efb73" }, { "url": "https://git.kernel.org/stable/c/17afa98bccec4f52203508b3f49b5f948c6fd6ac" }, { "url": "https://git.kernel.org/stable/c/7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d" }, { "url": "https://git.kernel.org/stable/c/6cfa9e60c0f88fdec6368e081ab968411cc706b1" }, { "url": "https://git.kernel.org/stable/c/34c3a47d20ae55b3600fed733bf96eafe9c500d5" } ], "title": "padata: Always leave BHs disabled when running -\u003eparallel()", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2022-50382", "datePublished": "2025-09-18T13:33:04.193Z", "dateReserved": "2025-09-17T14:53:06.996Z", "dateUpdated": "2025-09-18T13:33:04.193Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "vulnerability-lookup:meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2022-50382\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-18T14:15:36.993\",\"lastModified\":\"2025-09-19T16:00:46.437\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npadata: Always leave BHs disabled when running -\u003eparallel()\\n\\nA deadlock can happen when an overloaded system runs -\u003eparallel() in the\\ncontext of the current task:\\n\\n padata_do_parallel\\n -\u003eparallel()\\n pcrypt_aead_enc/dec\\n padata_do_serial\\n spin_lock(\u0026reorder-\u003elock) // BHs still enabled\\n \u003cinterrupt\u003e\\n ...\\n __do_softirq\\n ...\\n padata_do_serial\\n spin_lock(\u0026reorder-\u003elock)\\n\\nIt\u0027s a bug for BHs to be on in _do_serial as Steffen points out, so\\nensure they\u0027re off in the \\\"current task\\\" case like they are in\\npadata_parallel_worker to avoid this situation.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/17afa98bccec4f52203508b3f49b5f948c6fd6ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/34c3a47d20ae55b3600fed733bf96eafe9c500d5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6cfa9e60c0f88fdec6368e081ab968411cc706b1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e0681dd4eee029eb1d533d06993f7cb091efb73\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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