#VU96413 Use-after-free in Linux kernel - CVE-2022-48919

Cybersecurity Help s.r.o.

Published: 2024-08-22 | Updated: 2025-05-12

Vulnerability identifier: #VU96413

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48919

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

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

The vulnerability exists due to a use-after-free error within the cifs_do_mount() function in fs/cifs/cifsfs.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.9, 4.9.0, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 4.9.5, 4.9.6, 4.9.7, 4.9.8, 4.9.9, 4.9.10, 4.9.11, 4.9.12, 4.9.13, 4.9.14, 4.9.15, 4.9.16, 4.9.17, 4.9.18, 4.9.19, 4.9.20, 4.9.21, 4.9.22, 4.9.23, 4.9.24, 4.9.25, 4.9.26, 4.9.27, 4.9.28, 4.9.29, 4.9.30, 4.9.31, 4.9.32, 4.9.33, 4.9.34, 4.9.35, 4.9.36, 4.9.37, 4.9.38, 4.9.39, 4.9.40, 4.9.41, 4.9.42, 4.9.43, 4.9.44, 4.9.45, 4.9.46, 4.9.47, 4.9.48, 4.9.49, 4.9.50, 4.9.51, 4.9.52, 4.9.53, 4.9.54, 4.9.55, 4.9.56, 4.9.57, 4.9.58, 4.9.59, 4.9.60, 4.9.61, 4.9.62, 4.9.63, 4.9.64, 4.9.65, 4.9.66, 4.9.67, 4.9.68, 4.9.69, 4.9.70, 4.9.71, 4.9.72, 4.9.73, 4.9.74, 4.9.75, 4.9.76, 4.9.77, 4.9.78, 4.9.79, 4.9.80, 4.9.81, 4.9.82, 4.9.83, 4.9.84, 4.9.85, 4.9.86, 4.9.87, 4.9.88, 4.9.89, 4.9.90, 4.9.91, 4.9.92, 4.9.93, 4.9.94, 4.9.95, 4.9.96, 4.9.97, 4.9.98, 4.9.99, 4.9.100, 4.9.101, 4.9.102, 4.9.103, 4.9.104, 4.9.105, 4.9.106, 4.9.107, 4.9.108, 4.9.109, 4.9.110, 4.9.111, 4.9.112, 4.9.113, 4.9.114, 4.9.115, 4.9.116, 4.9.117, 4.9.118, 4.9.119, 4.9.120, 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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability

Dell RecoverPoint for Virtual Machines update for third-party components

Multiple vulnerabilities in Dell Cloud Tiering Appliance

SUSE update for the Linux Kernel