Vulnerability identifier: #VU24431

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-2019-19069

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 "fastrpc_dma_buf_attach()" function in "drivers/misc/fastrpc.c" file in the Linux kernel before 5.3.9 allows a local user to cause a denial of service (memory consumption) by triggering "dma_get_sgtable()" 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/fc739a058d99c9297ef6bfd923b809d85855b9a9
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.