Vulnerability-Lookup

GHSA-HFFQ-87G8-8R3X

Vulnerability from github – Published: 2025-09-18 15:30 – Updated: 2025-12-11 18:30

Details

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.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50382"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-18T14:15:36Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-hffq-87g8-8r3x",
  "modified": "2025-12-11T18:30:33Z",
  "published": "2025-09-18T15:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50382"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17afa98bccec4f52203508b3f49b5f948c6fd6ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34c3a47d20ae55b3600fed733bf96eafe9c500d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6cfa9e60c0f88fdec6368e081ab968411cc706b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e0681dd4eee029eb1d533d06993f7cb091efb73"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-50382 (GCVE-0-2022-50382)

Vulnerability from cvelistv5 – Published: 2025-09-18 13:33 – Updated: 2026-05-11 19:18

Title

padata: Always leave BHs disabled when running ->parallel()

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.

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 18:48 UTC

CWE

CWE-667 - Improper Locking

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/8e0681dd4eee029eb…
https://git.kernel.org/stable/c/17afa98bccec4f522…
https://git.kernel.org/stable/c/7337adb20fcc0aebb…
https://git.kernel.org/stable/c/6cfa9e60c0f88fdec…
https://git.kernel.org/stable/c/34c3a47d20ae55b36…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4611ce22468895acd61fee9ac1da810d60617d9a , < 8e0681dd4eee029eb1d533d06993f7cb091efb73 (git) Affected: 4611ce22468895acd61fee9ac1da810d60617d9a , < 17afa98bccec4f52203508b3f49b5f948c6fd6ac (git) Affected: 4611ce22468895acd61fee9ac1da810d60617d9a , < 7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d (git) Affected: 4611ce22468895acd61fee9ac1da810d60617d9a , < 6cfa9e60c0f88fdec6368e081ab968411cc706b1 (git) Affected: 4611ce22468895acd61fee9ac1da810d60617d9a , < 34c3a47d20ae55b3600fed733bf96eafe9c500d5 (git)
Linux	Linux	Affected: 5.8 Unaffected: 0 , < 5.8 (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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JSON

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        "metrics": [
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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.

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.

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