Vulnerability identifier: #VU94431

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/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-2022-48804

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 vt_ioctl() function in drivers/tty/vt/vt_ioctl.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/830c5aa302ec16b4ee641aec769462c37f802c90
http://git.kernel.org/stable/c/2a45a6bd1e6d651770aafff57ab3e1d3bb0b42e0
http://git.kernel.org/stable/c/170325aba4608bde3e7d21c9c19b7bc266ac0885
http://git.kernel.org/stable/c/ae3d57411562260ee3f4fd5e875f410002341104
http://git.kernel.org/stable/c/778302ca09498b448620edd372dc908bebf80bdf
http://git.kernel.org/stable/c/ffe54289b02e9c732d6f04c8ebbe3b2d90d32118
http://git.kernel.org/stable/c/6550bdf52846f85a2a3726a5aa0c7c4399f2fc02
http://git.kernel.org/stable/c/61cc70d9e8ef5b042d4ed87994d20100ec8896d9

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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.