#VU24437 Memory leak in Linux kernel - CVE-2019-18812

Vulnerability identifier: #VU24437

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-18812

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 "sof_dfsentry_write()" function in sound/soc/sof/debug.c in the Linux kernel through 5.3.9 allows a local user to cause a denial of service (memory consumption).

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.3 - 5.3.9

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External links
https://github.com/torvalds/linux/commit/c0a333d842ef67ac04adc72ff79dc1ccc3dca4ed
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LYIFGYEDQXP5DVJQQUARQRK2PXKBKQGY/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YWWOOJKZ4NQYN4RMFIVJ3ZIXKJJI3MKP/
https://security.netapp.com/advisory/ntap-20191205-0001/

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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.