CVE-2024-35974

MediumCVSS 5.5/10Last modified Jun 17, 2026

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().

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 81c1188905f88b77743d1fdeeedfc8cb7b67787d, < b5dae1cd0d8368b4338430ff93403df67f0b8bcc; >= bfe46d2efe46c5c952f982e2ca94fe2ec5e58e2a, < 083b58373463a6e5ee60ecb135269348f68ad7df; >= 1059699f87eb0b3aa9d574b91a572d534897134a, < 740ffad95ca8033bd6e080ed337655b13b4d38ac; >= 1059699f87eb0b3aa9d574b91a572d534897134a, < 858c489d81d659af17a4d11cfaad2afb42e47a76; >= 1059699f87eb0b3aa9d574b91a572d534897134a, < 8b8ace080319a866f5dfe9da8e665ae51d971c54; >= 6.1.16, < 6.1.17; >= 6.2.3, < 6.2.4
LinuxLinux5.18

References

Timeline

Published
May 20, 2024
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2024-35974: Medium severity, CVSS 5.5 | Vulnix