vulnerability
Ubuntu: (CVE-2021-47253): linux-fips vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | May 21, 2024 | Jun 26, 2025 | Aug 18, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
May 21, 2024
Added
Jun 26, 2025
Modified
Aug 18, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix potential memory leak in DMUB hw_init
[Why]
On resume we perform DMUB hw_init which allocates memory:
dm_resume->dm_dmub_hw_init->dc_dmub_srv_create->kzalloc
That results in memory leak in suspend/resume scenarios.
[How]
Allocate memory for the DC wrapper to DMUB only if it was not
allocated before.
No need to reallocate it on suspend/resume.
Solution
no-fix-ubuntu-package
References
- CVE-2021-47253
- https://attackerkb.com/topics/CVE-2021-47253
- CWE-401
- URL-https://git.kernel.org/linus/c5699e2d863f58221044efdc3fa712dd32d55cde
- URL-https://git.kernel.org/stable/c/9e8c2af010463197315fa54a6c17e74988b5259c
- URL-https://git.kernel.org/stable/c/aa000f828e60ac15d6340f606ec4a673966f5b0b
- URL-https://git.kernel.org/stable/c/c5699e2d863f58221044efdc3fa712dd32d55cde
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47253
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