Vulnerability-Lookup

GHSA-VPR8-93R8-XJ35

Vulnerability from github – Published: 2024-05-20 12:30 – Updated: 2025-12-23 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

block: fix q->blkg_list corruption during disk rebind

Multiple gendisk instances can allocated/added for single request queue in case of disk rebind. blkg may still stay in q->blkg_list when calling blkcg_init_disk() for rebind, then q->blkg_list becomes corrupted.

Fix the list corruption issue by:

add blkg_init_queue() to initialize q->blkg_list & q->blkcg_mutex only
move calling blkg_init_queue() into blk_alloc_queue()

The list corruption should be started since commit f1c006f1c685 ("blk-cgroup: synchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()") which delays removing blkg from q->blkg_list into blkg_free_workfn().

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-2024-35974"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-20T10:15:12Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix q-\u003eblkg_list corruption during disk rebind\n\nMultiple gendisk instances can allocated/added for single request queue\nin case of disk rebind. blkg may still stay in q-\u003eblkg_list when calling\nblkcg_init_disk() for rebind, then q-\u003eblkg_list becomes corrupted.\n\nFix the list corruption issue by:\n\n- add blkg_init_queue() to initialize q-\u003eblkg_list \u0026 q-\u003eblkcg_mutex only\n- move calling blkg_init_queue() into blk_alloc_queue()\n\nThe list corruption should be started since commit f1c006f1c685 (\"blk-cgroup:\nsynchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()\")\nwhich delays removing blkg from q-\u003eblkg_list into blkg_free_workfn().",
  "id": "GHSA-vpr8-93r8-xj35",
  "modified": "2025-12-23T18:30:18Z",
  "published": "2024-05-20T12:30:28Z",
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CVE-2024-35974 (GCVE-0-2024-35974)

Vulnerability from cvelistv5 – Published: 2024-05-20 09:42 – Updated: 2026-05-23 15:45

Title

block: fix q->blkg_list corruption during disk rebind

Summary

In the Linux kernel, the following vulnerability has been resolved: block: fix q->blkg_list corruption during disk rebind Multiple gendisk instances can allocated/added for single request queue in case of disk rebind. blkg may still stay in q->blkg_list when calling blkcg_init_disk() for rebind, then q->blkg_list becomes corrupted. Fix the list corruption issue by: - add blkg_init_queue() to initialize q->blkg_list & q->blkcg_mutex only - move calling blkg_init_queue() into blk_alloc_queue() The list corruption should be started since commit f1c006f1c685 ("blk-cgroup: synchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()") which delays removing blkg from q->blkg_list into blkg_free_workfn().

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-23 19:19 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/b5dae1cd0d8368b43…
https://git.kernel.org/stable/c/083b58373463a6e5e…
https://git.kernel.org/stable/c/740ffad95ca8033bd…
https://git.kernel.org/stable/c/858c489d81d659af1…
https://git.kernel.org/stable/c/8b8ace080319a866f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 81c1188905f88b77743d1fdeeedfc8cb7b67787d , < b5dae1cd0d8368b4338430ff93403df67f0b8bcc (git) Affected: bfe46d2efe46c5c952f982e2ca94fe2ec5e58e2a , < 083b58373463a6e5ee60ecb135269348f68ad7df (git) Affected: 1059699f87eb0b3aa9d574b91a572d534897134a , < 740ffad95ca8033bd6e080ed337655b13b4d38ac (git) Affected: 1059699f87eb0b3aa9d574b91a572d534897134a , < 858c489d81d659af17a4d11cfaad2afb42e47a76 (git) Affected: 1059699f87eb0b3aa9d574b91a572d534897134a , < 8b8ace080319a866f5dfe9da8e665ae51d971c54 (git) Affected: 6.1.16 , < 6.1.17 (semver) Affected: 6.2.3 , < 6.2.4 (semver)
Linux	Linux	Affected: 5.18 Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.17 , ≤ 6.1.* (semver) Unaffected: 6.2.4 , ≤ 6.2.* (semver) Unaffected: 6.6.28 , ≤ 6.6.* (semver) Unaffected: 6.8.7 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)

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JSON

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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.
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