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.
References
Configurations
Configuration 1 (hide)
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History
17 Jul 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
07 Jan 2025, 17:29
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77 - Patch | |
| References | () https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26 - Patch | |
| References | () https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c - Patch | |
| References | () https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-667 |
Information
Published : 2024-04-03 17:15
Updated : 2025-07-17 17:15
NVD link : CVE-2024-26775
Mitre link : CVE-2024-26775
CVE.ORG link : CVE-2024-26775
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-667
Improper Locking