#VU23027 Memory leak in Linux kernel - CVE-2019-19066

Vulnerability identifier: #VU23027

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-19066

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 attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the "bfad_im_get_stats()" function in "drivers/scsi/bfa/bfad_attr.c" file. A local attacker can cause a denial of service condition (memory consumption) by triggering "bfa_port_get_stats()" failures.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.3 - 5.3.11

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External links
https://github.com/torvalds/linux/commit/0e62395da2bd5166d7c9e14cbc7503b256a34cb0
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T/

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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.