Vulnerability Details : CVE-2021-47420
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: fix a potential ttm->sg memory leak
Memory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr,
but isn't freed by kfree in kfd_mem_dmaunmap_userptr. Free it!
Products affected by CVE-2021-47420
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47420
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-2021-47420
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-2021-47420
-
The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-47420
-
https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb
drm/amdkfd: fix a potential ttm->sg memory leak - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516
drm/amdkfd: fix a potential ttm->sg memory leak - kernel/git/stable/linux.git - Linux kernel stable treePatch
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