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Vulnerability record · CVE-2019-11833 · published 15 May 2019

CVE-2019-11833: Linux kernel use of uninitialized resource vulnerability

Linux · Linux Kernel

fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.

5.5 CVSS 3.1 Medium EPSS 0.65% · top 50.8% CWE-908 · Use of uninitialized resource
5.5CVSS 3.1 base score, v2 2.1
0.65%EPSS exploitation probability, 30 days
NoNot in CISA KEV
15Affected product versions listed by NVD
44References
17 Jun 2026Last modified by NVD

Description

fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.

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

Affected products

15 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html Broken Link
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/108372 Broken LinkThird Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:2029 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2043 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3309 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3517 Third Party Advisory
https://github.com/torvalds/linux/commit/592acbf16821288ecdc4192c47e3774a4c48bb64 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/06/msg00010.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/06/msg00011.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJGZIMGB72TL7OGWRMHIL43
https://seclists.org/bugtraq/2019/Jun/26 Mailing ListThird Party Advisory
https://usn.ubuntu.com/4068-1/ Third Party Advisory
https://usn.ubuntu.com/4068-2/ Third Party Advisory
https://usn.ubuntu.com/4069-1/ Third Party Advisory
https://usn.ubuntu.com/4069-2/ Third Party Advisory
https://usn.ubuntu.com/4076-1/ Third Party Advisory
https://usn.ubuntu.com/4095-2/ Third Party Advisory
https://usn.ubuntu.com/4118-1/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4465 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html Broken Link
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/108372 Broken LinkThird Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:2029 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2043 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3309 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3517 Third Party Advisory
https://github.com/torvalds/linux/commit/592acbf16821288ecdc4192c47e3774a4c48bb64 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/06/msg00010.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/06/msg00011.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJGZIMGB72TL7OGWRMHIL43
https://seclists.org/bugtraq/2019/Jun/26 Mailing ListThird Party Advisory
https://usn.ubuntu.com/4068-1/ Third Party Advisory
https://usn.ubuntu.com/4068-2/ Third Party Advisory
https://usn.ubuntu.com/4069-1/ Third Party Advisory
https://usn.ubuntu.com/4069-2/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-11833), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.