CVE-2024-35974: block: fix q->blkg_list corruption during disk rebind
First published: Mon May 20 2024(Updated: )
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().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=6.1.106-3<=6.1.112-1 | 5.10.223-1 5.10.226-1 6.10.11-1 6.11.2-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/740ffad95ca8033bd6e080ed337655b13b4d38ac
- https://git.kernel.org/stable/c/858c489d81d659af17a4d11cfaad2afb42e47a76
- https://git.kernel.org/stable/c/8b8ace080319a866f5dfe9da8e665ae51d971c54
- https://launchpad.net/bugs/cve/CVE-2024-35974
- https://git.kernel.org/linus/8b8ace080319a866f5dfe9da8e665ae51d971c54
- https://security-tracker.debian.org/tracker/CVE-2024-35974
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35974
- https://nvd.nist.gov/vuln/detail/CVE-2024-35974
- https://ubuntu.com/security/CVE-2024-35974
- agent/title
- agent/severity
- agent/type
- collector/nvd-api
- source/NVD
- collector/epss-latest
- source/FIRST
- agent/epss
- collector/nvd-cve
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/remedy
- agent/first-publish-date
- agent/description
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- package-manager/debian