#VU19594 Integer overflow in Linux kernel - CVE-2019-14283

Vulnerability identifier: #VU19594

Vulnerability risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-14283

CWE-ID: CWE-190

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 execute arbitrary code or cause a denial of service (DoS) condition on a targeted system.

The vulnerability exists due to the "set_geometry" function in the "drivers/block/floppy.c" file does not properly validate the sect and head fields. A local authenticated attacker can insert a floppy disk that submits malicious input to the targeted system, trigger integer overflow, which could cause an out-of-bounds write condition and execute arbitrary code on the target system or cause a DoS condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: 5.2.1 - 5.2.2

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External links
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=da99466ac243f15fbba65bd261bfc75ffa1532b6
https://github.com/torvalds/linux/commit/da99466ac243f15fbba65bd261bfc75ffa1532b6

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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.