CVE-2024-35974 (GCVE-0-2024-35974)

Vulnerability from cvelistv5 – Published: 2024-05-20 09:42 – Updated: 2025-12-23 16:40
VLAI?
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.
Assigner
References
Impacted 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)
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    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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  • 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.
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