CVE Database›Document archive›CVE-2019-11833

CVE-2019-11833

kernel: fs/ext4/extents.c leads to information disclosure

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Severity

Moderate

Red Hat Product Security

5.5

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 · 5.5
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE-908 · Use of Uninitialized Resource