Use-after-free in Linux kernel - CVE-2021-3348

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Main Vulnerability Database Vulnerabilities #VU83433

Use-after-free in Linux kernel - CVE-2021-3348

Published: February 1, 2021 / Updated: November 22, 2023


Vulnerability identifier: #VU83433
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-3348
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local authenticated user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the nbd_add_socket in drivers/block/nbd.c. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.


Remediation

Install update from vendor's website.

External links