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UBUNTU-CVE-2019-19768

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UBUNTU-CVE-2019-19768

Published: 12 Dec 2019Last Modified: 9 Sept 2026

Upstream:

Aliases:

Summary:

Details: 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).

References: https://ubuntu.com/security/CVE-2019-19768, https://bugzilla.kernel.org/show_bug.cgi?id=205711, https://lore.kernel.org/linux-block/[email protected]/, https://ubuntu.com/security/notices/USN-4342-1, https://ubuntu.com/security/notices/USN-4344-1, https://ubuntu.com/security/notices/USN-4345-1, https://ubuntu.com/security/notices/USN-4346-1, https://www.cve.org/CVERecord?id=CVE-2019-19768

Affected packages

Package

Name: linux-aws

Purl: pkg:deb/ubuntu/linux-aws?arch=source&distro=trusty%2Fesm

Affected ranges

Type: ECOSYSTEM

Events:

Introduced- 0

Fixed -4.4.0-1066.70

Affected versions

4.4.0-1002.2

4.4.0-1003.3

4.4.0-1005.5

4.4.0-1006.6

4.4.0-1009.9

4.4.0-1010.10

4.4.0-1011.11

4.4.0-1012.12

4.4.0-1014.14

4.4.0-1016.16

4.4.0-1017.17

4.4.0-1019.19

4.4.0-1022.22

4.4.0-1023.23

4.4.0-1024.25

4.4.0-1025.26

4.4.0-1027.30

4.4.0-1028.31

4.4.0-1029.32

4.4.0-1031.34

4.4.0-1032.35

4.4.0-1034.37

4.4.0-1036.39

4.4.0-1037.40

4.4.0-1038.41

4.4.0-1039.42

4.4.0-1040.43

4.4.0-1042.45

4.4.0-1044.47

4.4.0-1045.48

4.4.0-1046.50

4.4.0-1048.52

4.4.0-1050.54

4.4.0-1052.56

4.4.0-1054.58

4.4.0-1055.59

4.4.0-1056.60

4.4.0-1058.62

4.4.0-1059.63

4.4.0-1060.64

4.4.0-1061.65

4.4.0-1062.66

4.4.0-1064.68

4.4.0-1065.69

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High