#VU21630 Out-of-bounds read in Linux kernel - CVE-2019-15505

Vulnerability identifier: #VU21630

Vulnerability risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-15505

CWE-ID: CWE-125

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the drivers/media/usb/dvb-usb/technisat-usb2.c USB driver in Linux kernel. A local user can use a specially crafted USB device to trigger out-of-bounds read error during data transfer and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: 5.2.1 - 5.2.9

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External links
https://git.linuxtv.org/media_tree.git/commit/?id=0c4df39e504bf925ab666132ac3c98d6cbbe380b
https://lore.kernel.org/linux-media/20190821104408.w7krumcglxo6fz5q@gofer.mess.org/
https://lore.kernel.org/lkml/b9b256cb-95f2-5fa1-9956-5a602a017c11@gmail.com/

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.