CVE-2021-47671
LOWLinux Kernel 5.13-5.14.18 - Use-After-Free in CAN ETAS ES58X Error Message Handling
Title source: llmDescription
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.
References (3)
Core 3
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