Vulnerability Details : CVE-2021-47253
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.
Products affected by CVE-2021-47253
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47253
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 9 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47253
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2024-12-30 |
CWE ids for CVE-2021-47253
-
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-47253
-
https://git.kernel.org/stable/c/aa000f828e60ac15d6340f606ec4a673966f5b0b
drm/amd/display: Fix potential memory leak in DMUB hw_init - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/9e8c2af010463197315fa54a6c17e74988b5259c
drm/amd/display: Fix potential memory leak in DMUB hw_init - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/c5699e2d863f58221044efdc3fa712dd32d55cde
drm/amd/display: Fix potential memory leak in DMUB hw_init - kernel/git/stable/linux.git - Linux kernel stable treePatch
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