In the Linux kernel, the following vulnerability has been resolved:
padata: Fix pd UAF once and for all
There is a race condition/UAF in padata_reorder that goes back
to the initial commit. A reference count is taken at the start
of the process in padata_do_parallel, and released at the end in
padata_serial_worker.
This reference count is (and only is) required for padata_replace
to function correctly. If padata_replace is never called then
there is no issue.
In the function padata_reorder which serves as the core of padata,
as soon as padata is added to queue->serial.list, and the associated
spin lock released, that padata may be processed and the reference
count on pd would go away.
Fix this by getting the next padata before the squeue->serial lock
is released.
In order to make this possible, simplify padata_reorder by only
calling it once the next padata arrives.
References
Configurations
Configuration 1 (hide)
|
History
26 Nov 2025, 17:57
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux linux Kernel
Linux |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CWE | CWE-416 | |
| References | () https://git.kernel.org/stable/c/71203f68c7749609d7fc8ae6ad054bdedeb24f91 - Patch | |
| References | () https://git.kernel.org/stable/c/cdf79bd2e1ecb3cc75631c73d8f4149be6019a52 - Patch | |
| References | () https://git.kernel.org/stable/c/dbe3e911a59bda6de96e7cae387ff882c2c177fa - Patch |
Information
Published : 2025-08-19 17:15
Updated : 2025-11-26 17:57
NVD link : CVE-2025-38584
Mitre link : CVE-2025-38584
CVE.ORG link : CVE-2025-38584
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free