Vulnerability identifier: #VU24441

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-2019-19048

CWE-ID: CWE-401

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 memory leak within the "crypto_reportstat()" function in drivers/virt/vboxguest/vboxguest_utils.c in the Linux kernel before 5.3.9 allows a local user to cause a denial of service (memory consumption) by triggering "copy_form_user()" failures.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.3 - 5.3.8

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External links
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9
http://github.com/torvalds/linux/commit/e0b0cb9388642c104838fac100a4af32745621e2
http://security.netapp.com/advisory/ntap-20191205-0001/
http://usn.ubuntu.com/4208-1/

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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.