Information disclosure in Linux kernel stex_queuecommand_lck



Published: 2022-09-22
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-40768
CWE-ID CWE-284
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU67587

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-40768

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to improper access restrictions in the drivers/scsi/stex.c in the Linux kernel. A local user can obtain sensitive information from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions


CPE2.3 External links

http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/scsi/stex.c
http://www.openwall.com/lists/oss-security/2022/09/09/1
http://lore.kernel.org/all/20220908145154.2284098-1-gregkh@linuxfoundation.org/
http://www.openwall.com/lists/oss-security/2022/09/19/1

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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