Memory leak in Linux kernel - CVE-2021-47671

Vulnerability identifier: #VU107647

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-47671

CWE-ID: CWE-401

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the es58x_rx_err_msg() function in drivers/net/can/usb/etas_es58x/es58x_core.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
kernel-rt
kernel-rt-debugsource
kernel-rt-debuginfo
kernel-source-rt

Install update from vendor's website.

kernel-rt - update to 5.14.21-150400.15.118.1
kernel-rt-debugsource - update to 5.14.21-150400.15.118.1
kernel-rt-debuginfo - update to 5.14.21-150400.15.118.1
kernel-source-rt - update to 5.14.21-150400.15.118.1

• https://git.kernel.org/stable/c/4f389e1276a5389c92cef860c9fde8e1c802a871
• https://git.kernel.org/stable/c/7eb0881aec26099089f12ae850aebd93190b1dfe
• https://git.kernel.org/stable/c/d9447f768bc8c60623e4bb3ce65b8f4654d33a50

• Memory leak in Linux kernel etas es58x driver
• SUSE update for the Linux Kernel