CVE-2021-47624
HIGH EPSS 14.6%
Published Jul 16, 20241y ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
Published Jul 16, 2024 1y ago
Last Modified Jun 17, 2026 1w ago
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".
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
14.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Affected Products 2
References 3
- git.kernel.org https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb
- git.kernel.org https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f
- git.kernel.org https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18
Remediation
- git.kernel.org https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb
- git.kernel.org https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f
- git.kernel.org https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18