CVE-2021-47624
Solaris RPC Reference Count Leak Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change The refcount leak issues take place in an error handling path. When the 3rd argument buf doesn't match with "offline", "online" or "remove", the function simply returns -EINVAL and forgets to decrease the reference count of a rpc_xprt object and a rpc_xprt_switch object increased by rpc_sysfs_xprt_kobj_get_xprt() and rpc_sysfs_xprt_kobj_get_xprt_switch(), causing reference count leaks of both unused objects. Fix this issue by jumping to the error handling path labelled with out_put when buf matches none of "offline", "online" or "remove".
INFO
Published Date :
July 16, 2024, 12:15 p.m.
Last Modified :
Aug. 21, 2024, 5:43 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.2
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-2021-47624.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb | Mailing List Patch |
| https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f | Mailing List Patch |
| https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18 | Mailing List Patch |
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-2021-47624 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47624 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]
Aug. 21, 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:N/A:H Changed Reference Type https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb No Types Assigned https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f No Types Assigned https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18 No Types Assigned https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18 Mailing List, Patch Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15.24 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.10 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 16, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change The refcount leak issues take place in an error handling path. When the 3rd argument buf doesn't match with "offline", "online" or "remove", the function simply returns -EINVAL and forgets to decrease the reference count of a rpc_xprt object and a rpc_xprt_switch object increased by rpc_sysfs_xprt_kobj_get_xprt() and rpc_sysfs_xprt_kobj_get_xprt_switch(), causing reference count leaks of both unused objects. Fix this issue by jumping to the error handling path labelled with out_put when buf matches none of "offline", "online" or "remove". Added Reference kernel.org https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18 [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-2021-47624 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-2021-47624
weaknesses.