CVE-2021-47538

MEDIUM

Linux Kernel 4.19.82-4.19.220 - Use-After-Free in rxrpc_local

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer() Need to call rxrpc_put_local() for peer candidate before kfree() as it holds a ref to rxrpc_local. [DH: v2: Changed to abstract the peer freeing code out into a function]

References (5)

Core 5

Scores

CVSS v3 5.5
EPSS 0.0024
EPSS Percentile 14.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (18)
Linux/Linux < 5.4
Linux/Linux 4.19.220 - 4.19.*
Linux/Linux 4.19.82 - 4.19.220
Linux/Linux 5.10.84 - 5.10.*
Linux/Linux 5.15.7 - 5.15.*
Linux/Linux 5.16
Linux/Linux 5.3.9 - 5.4
Linux/Linux 5.4
Linux/Linux 5.4.164 - 5.4.*
Linux/Linux 9b7fc03b4cdbfb668b6891967105258691c6d3b5
... and 8 more
Published May 24, 2024
Tracked Since Feb 18, 2026