CVE-2021-47596
"HP Ethernet Networks hns3 Linux Kernel Use-After-Free Vulnerability"
Description
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg Currently, the hns3_remove function firstly uninstall client instance, and then uninstall acceletion engine device. The netdevice is freed in client instance uninstall process, but acceletion engine device uninstall process still use it to trace runtime information. This causes a use after free problem. So fixes it by check the instance register state to avoid use after free.
INFO
Published Date :
June 19, 2024, 3:15 p.m.
Last Modified :
Nov. 21, 2024, 6:36 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
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-2021-47596.
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).
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The following list is the news that have been mention
CVE-2021-47596 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47596 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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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/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 Added Reference https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 Added Reference https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 -
Initial Analysis by [email protected]
Aug. 19, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 No Types Assigned https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 Patch Changed Reference Type https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 No Types Assigned https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 Patch Changed Reference Type https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 No Types Assigned https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 Patch Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.8 up to (excluding) 5.10.88 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.11 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 19, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg Currently, the hns3_remove function firstly uninstall client instance, and then uninstall acceletion engine device. The netdevice is freed in client instance uninstall process, but acceletion engine device uninstall process still use it to trace runtime information. This causes a use after free problem. So fixes it by check the instance register state to avoid use after free. Added Reference kernel.org https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 [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-2021-47596 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-2021-47596
weaknesses.