CVE-2021-47671

LOW

Linux Kernel 5.13-5.14.18 - Use-After-Free in CAN ETAS ES58X Error Message Handling

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: can: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path In es58x_rx_err_msg(), if can->do_set_mode() fails, the function directly returns without calling netif_rx(skb). This means that the skb previously allocated by alloc_can_err_skb() is not freed. In other terms, this is a memory leak. This patch simply removes the return statement in the error branch and let the function continue. Issue was found with GCC -fanalyzer, please follow the link below for details.

Scores

CVSS v3 3.3
EPSS 0.0015
EPSS Percentile 4.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (9)
Linux/Linux < 5.13
Linux/Linux 5.13
Linux/Linux 5.14.19 - 5.14.*
Linux/Linux 5.15.3 - 5.15.*
Linux/Linux 5.16
Linux/Linux 8537257874e949a59c834cecfd5a063e11b64b0b - 4f389e1276a5389c92cef860c9fde8e1c802a871
Linux/Linux 8537257874e949a59c834cecfd5a063e11b64b0b - 7eb0881aec26099089f12ae850aebd93190b1dfe
Linux/Linux 8537257874e949a59c834cecfd5a063e11b64b0b - d9447f768bc8c60623e4bb3ce65b8f4654d33a50
linux/linux_kernel 5.13 - 5.14.19
Published Apr 17, 2025
Tracked Since Feb 18, 2026