CVE-2019-11833
kernel: fs/ext4/extents.c leads to information disclosure
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · May 11, 2019
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's implementation of ext4 extent management. The kernel doesn't correctly initialize memory regions in the extent tree block which may be exported to a local user to obtain sensitive information by reading empty/uninitialized data from the filesystem.
Statement
This is a possible information leak of data that existed in the extent tree blocks. While the attacker does not have control of what exists in the blocks prior to this point they may be able to glean confidential information or possibly information that could be used to further another attack.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 5.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE-908 · Use of Uninitialized Resource