CVE-2021-47253
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 9e8c2af010463197315fa54a6c17e74988b5259c | affected |
| Linux | Linux | 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < aa000f828e60ac15d6340f606ec4a673966f5b0b | affected |
| Linux | Linux | 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < c5699e2d863f58221044efdc3fa712dd32d55cde | affected |
| Linux | Linux | 4.15 | affected |
| Linux | Linux | 0 < 4.15 | unaffected |
| Linux | Linux | 5.10.45 <= 5.10.* | unaffected |
| Linux | Linux | 5.12.12 <= 5.12.* | unaffected |
| Linux | Linux | 5.13 <= * | unaffected |
Weaknesses
ADP Enrichment
CVE Program Container
Additional References
- https://git.kernel.org/stable/c/9e8c2af010463197315fa54a6c17e74988b5259c
- https://git.kernel.org/stable/c/aa000f828e60ac15d6340f606ec4a673966f5b0b
- https://git.kernel.org/stable/c/c5699e2d863f58221044efdc3fa712dd32d55cde
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://git.kernel.org/stable/c/9e8c2af010463197315fa54a6c17e74988b5259c
- https://git.kernel.org/stable/c/aa000f828e60ac15d6340f606ec4a673966f5b0b
- https://git.kernel.org/stable/c/c5699e2d863f58221044efdc3fa712dd32d55cde
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