CVE-2021-47420
AMD Kfd Buffer Leak
Description
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!
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
Dec. 30, 2024, 7:37 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47420.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47420 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47420 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Dec. 30, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NIST CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.14 up to (excluding) 5.14.12 *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:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb No Types Assigned https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb Patch Changed Reference Type https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb No Types Assigned https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb Patch Changed Reference Type https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 No Types Assigned https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 Patch Changed Reference Type https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 No Types Assigned https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb Added Reference https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added Description 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! Added Reference kernel.org https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47420 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47420
weaknesses.