In the Linux kernel, the following vulnerability has been resolved:
sched: Fix out-of-bound access in uclamp
Util-clamp places tasks in different buckets based on their clamp values
for performance reasons. However, the size of buckets is currently
computed using a rounding division, which can lead to an off-by-one
error in some configurations.
For instance, with 20 buckets, the bucket size will be 1024/20=51. A
task with a clamp of 1024 will be mapped to bucket id 1024/51=20. Sadly,
correct indexes are in range [0,19], hence leading to an out of bound
memory access.
Clamp the bucket id to fix the issue.
References
Configurations
Configuration 1 (hide)
|
History
24 Dec 2024, 14:40
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/3da3f804b82a0a382d523a21acf4cf3bb35f936d - Patch | |
| References | () https://git.kernel.org/stable/c/42ee47c7e3569d9a0e2cb5053c496d97d380472f - Patch | |
| References | () https://git.kernel.org/stable/c/687f523c134b7f0bd040ee1230f6d17990d54172 - Patch | |
| References | () https://git.kernel.org/stable/c/6d2f8909a5fabb73fe2a63918117943986c39b6c - Patch | |
| References | () https://git.kernel.org/stable/c/f7347c85490b92dd144fa1fba9e1eca501656ab3 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
| CWE | CWE-125 |
Information
Published : 2024-02-28 09:15
Updated : 2024-12-24 14:40
NVD link : CVE-2021-46993
Mitre link : CVE-2021-46993
CVE.ORG link : CVE-2021-46993
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-125
Out-of-bounds Read