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CVE PROGRAM SOURCE RECORDUnscored

CVE-2024-35974

block: fix q->blkg_list corruption during disk rebind

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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().

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 81c1188905f88b77743d1fdeeedfc8cb7b67787d to < b5dae1cd0d8368b4338430ff93403df67f0b8bccaffected
  • bfe46d2efe46c5c952f982e2ca94fe2ec5e58e2a to < 083b58373463a6e5ee60ecb135269348f68ad7dfaffected
  • 1059699f87eb0b3aa9d574b91a572d534897134a to < 740ffad95ca8033bd6e080ed337655b13b4d38acaffected
  • 1059699f87eb0b3aa9d574b91a572d534897134a to < 858c489d81d659af17a4d11cfaad2afb42e47a76affected
  • 1059699f87eb0b3aa9d574b91a572d534897134a to < 8b8ace080319a866f5dfe9da8e665ae51d971c54affected
  • 6.1.16 to < 6.1.17affected
  • 6.2.3 to < 6.2.4affected

Linux Linux

Default version status: affected

  • 5.18affected
  • 0 to < 5.18unaffected
  • 6.1.17 to ≤ 6.1.*unaffected
  • 6.2.4 to ≤ 6.2.*unaffected
  • 6.6.28 to ≤ 6.6.*unaffected
  • 6.8.7 to ≤ 6.8.*unaffected
  • 6.9 to ≤ *unaffected

References