#VU28418 Use-after-free


Published: 2019-11-29 | Updated: 2020-06-01

Vulnerability identifier: #VU28418

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-19377

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local non-authenticated attacker to execute arbitrary code.

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.4 - 5.6.4


CPE

External links
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.33
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.18
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


Latest bulletins with this vulnerability