#VU93645 Resource management error in Linux kernel - CVE-2022-48668

Vulnerability identifier: #VU93645

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48668

CWE-ID: CWE-399

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 corrupt data.

The vulnerability exists due to improper management of internal resources within the smb3_collapse_range() function in fs/cifs/smb2ops.c. A local user can corrupt data.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.19, 5.19 rc1, 5.19 rc4, 5.19 rc5, 5.19 rc6, 5.19.1, 5.19.2, 5.19.3, 5.19.4, 5.19.5, 5.19.6, 5.19.7, 5.19.8, 5.19.9, 5.19.10, 5.19.11, 6.0 rc1, 6.0 rc2, 6.0 rc3, 6.0 rc4

---

External links
https://git.kernel.org/stable/c/49523a4732204bdacbf3941a016503ddb4ddb3b9
https://git.kernel.org/stable/c/fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.12
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0

---

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.