Information disclosure in Linux kernel - CVE-2021-47539
Published: June 8, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91328
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47539
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to information disclosure within the rxrpc_get_bundle() and rxrpc_look_up_bundle() functions in net/rxrpc/conn_client.c. A local user can gain access to sensitive information.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/35b40f724c4ef0f683d94dab3af9ab38261d782b
- https://git.kernel.org/stable/c/bc97458620e38961af9505cc060ad4cf5c9e4af7
- https://git.kernel.org/stable/c/ca77fba821351190777b236ce749d7c4d353102e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.84
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16