CVE-2021-47071
Linux kernel: UIO HV Generic Memory Leak vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix a memory leak in error handling paths If 'vmbus_establish_gpadl()' fails, the (recv|send)_gpadl will not be updated and 'hv_uio_cleanup()' in the error handling path will not be able to free the corresponding buffer. In such a case, we need to free the buffer explicitly.
INFO
Published Date :
March 1, 2024, 10:15 p.m.
Last Modified :
Dec. 12, 2024, 2:43 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected kernel packages.
- Reboot the system after updating.
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-2021-47071.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47071 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-2021-47071
weaknesses.
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-2021-47071 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47071 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.
-
Initial Analysis by [email protected]
Dec. 12, 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) 4.20 up to (excluding) 5.4.122 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.40 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.7 *cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d No Types Assigned https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d Patch Changed Reference Type https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d No Types Assigned https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d Patch Changed Reference Type https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 No Types Assigned https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 Patch Changed Reference Type https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 No Types Assigned https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 Patch Changed Reference Type https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 No Types Assigned https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 Patch Changed Reference Type https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 No Types Assigned https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 Patch Changed Reference Type https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 No Types Assigned https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 Patch Changed Reference Type https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 No Types Assigned https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 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/3ee098f96b8b6c1a98f7f97915f8873164e6af9d Added Reference https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 Added Reference https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 Added Reference https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 01, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix a memory leak in error handling paths If 'vmbus_establish_gpadl()' fails, the (recv|send)_gpadl will not be updated and 'hv_uio_cleanup()' in the error handling path will not be able to free the corresponding buffer. In such a case, we need to free the buffer explicitly. Added Reference Linux https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d [No types assigned]