CVE-2024-26775 (GCVE-0-2024-26775)

Vulnerability from cvelistv5 – Published: 2024-04-03 17:01 – Updated: 2026-01-05 10:34
VLAI?
Title
aoe: avoid potential deadlock at set_capacity
Summary
In the Linux kernel, the following vulnerability has been resolved: aoe: avoid potential deadlock at set_capacity Move set_capacity() outside of the section procected by (&d->lock). To avoid possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- [1] lock(&bdev->bd_size_lock); local_irq_disable(); [2] lock(&d->lock); [3] lock(&bdev->bd_size_lock); <Interrupt> [4] lock(&d->lock); *** DEADLOCK *** Where [1](&bdev->bd_size_lock) hold by zram_add()->set_capacity(). [2]lock(&d->lock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc() is trying to acquire [3](&bdev->bd_size_lock) at set_capacity() call. In this situation an attempt to acquire [4]lock(&d->lock) from aoecmd_cfg_rsp() will lead to deadlock. So the simplest solution is breaking lock dependency [2](&d->lock) -> [3](&bdev->bd_size_lock) by moving set_capacity() outside.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a782483cc1f875355690625d8253a232f2581418 , < 2499fa286fb010ceb289950050199f33c26667b9 (git)
Affected: a782483cc1f875355690625d8253a232f2581418 , < 2d623c94fbba3554f4446ba6f3c764994e8b0d26 (git)
Affected: a782483cc1f875355690625d8253a232f2581418 , < 673629018ba04906899dcb631beec34d871f709c (git)
Affected: a782483cc1f875355690625d8253a232f2581418 , < 19a77b27163820f793b4d022979ffdca8f659b77 (git)
Affected: a782483cc1f875355690625d8253a232f2581418 , < e169bd4fb2b36c4b2bee63c35c740c85daeb2e86 (git)
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    Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.15.189 , ≤ 5.15.* (semver)
Unaffected: 6.1.80 , ≤ 6.1.* (semver)
Unaffected: 6.6.19 , ≤ 6.6.* (semver)
Unaffected: 6.7.7 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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