CVE-2019-19768

Published: Dec 12, 2019Modified: Nov 21, 2024

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).

Affected (3)

Products: Linux: Linux Kernel

Linux

1 product

Linux Kernel

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	Version 5.4.0
Linux Linux Kernel	Version 5.4.0 rc1
Linux Linux Kernel	Version 5.4.0 rc2

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (22)

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html

Source: cve@mitre.org

https://bugzilla.kernel.org/show_bug.cgi?id=205711

Source: cve@mitre.org

Issue TrackingVendor Advisory

https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html

Source: cve@mitre.org

https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html

Source: cve@mitre.org

https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html

Source: cve@mitre.org

https://security.netapp.com/advisory/ntap-20200103-0001/

Source: cve@mitre.org

https://usn.ubuntu.com/4342-1/

Source: cve@mitre.org

https://usn.ubuntu.com/4344-1/

Source: cve@mitre.org

https://usn.ubuntu.com/4345-1/

Source: cve@mitre.org

https://usn.ubuntu.com/4346-1/

Source: cve@mitre.org

https://www.debian.org/security/2020/dsa-4698

Source: cve@mitre.org

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html