Vulnerability identifier: #VU92318

Vulnerability risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47580

CWE-ID: CWE-125

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 perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds read error within the p_fill_from_dev_buffer(), resp_inquiry(), resp_requests(), resp_mode_sense(), resp_ie_l_pg(), resp_log_sense() and resp_report_zones() functions in drivers/scsi/scsi_debug.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/bdb854f134b964528fa543e0351022eb45bd7346
http://git.kernel.org/stable/c/3085147645938eb41f0bc0e25ef9791e71f5ee4b
http://git.kernel.org/stable/c/36e07d7ede88a1f1ef8f0f209af5b7612324ac2c

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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.