In the Linux kernel 4.13 through 4.16.11, ext4_read_inline_data() in fs/ext4/inline.c performs a memcpy with an untrusted length value in certain circumstances involving a crafted filesystem that stores the system.data extended attribute value in a dedicated inode.
http://www.securityfocus.com/bid/104291
https://access.redhat.com/errata/RHSA-2019:0525
https://bugs.chromium.org/p/project-zero/issues/detail?id=1580
https://bugzilla.kernel.org/show_bug.cgi?id=199803
https://usn.ubuntu.com/3752-1/
https://usn.ubuntu.com/3752-2/
Source: MITRE
Published: 2018-05-24
Updated: 2019-03-15
Type: CWE-416
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 2.2
Severity: MEDIUM