Input validation error in Linux kernel



Published: 2020-06-03 | Updated: 2020-08-08
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-20810
CWE-ID CWE-20
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) Input validation error

EUVDB-ID: #VU34375

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-2019-20810

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel before 5.6 does not call snd_card_free for a failure path, which causes a memory leak, aka CID-9453264ef586.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.0 - 5.5.19

External links

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9453264ef58638ce8976121ac44c07a3ef375983
http://usn.ubuntu.com/4427-1/
http://usn.ubuntu.com/4439-1/
http://usn.ubuntu.com/4440-1/


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.



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