medium
5.5
CWE
908 456 200
Advisory Published
CVE Published
Updated

CVE-2019-11833: Infoleak

First published: Sat May 11 2019(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/kernel-rt<0:3.10.0-1062.rt56.1022.el7
0:3.10.0-1062.rt56.1022.el7
redhat/kernel<0:3.10.0-1062.el7
0:3.10.0-1062.el7
redhat/kernel-rt<0:4.18.0-147.rt24.93.el8
0:4.18.0-147.rt24.93.el8
redhat/kernel<0:4.18.0-147.el8
0:4.18.0-147.el8
Linux Kernel<=5.1.2
Fedoraproject Fedora=29
Debian GNU/Linux=8.0
Debian GNU/Linux=9.0
Ubuntu Linux=14.04
Ubuntu Linux=16.04
Ubuntu Linux=18.04
Ubuntu Linux=19.04
Red Hat Enterprise Linux=8.0
redhat enterprise Linux desktop=7.0
redhat enterprise Linux eus=8.1
redhat enterprise Linux eus=8.2
redhat enterprise Linux eus=8.4
redhat enterprise Linux eus=8.6
redhat enterprise Linux for real time=7
redhat enterprise Linux for real time=8.0
redhat enterprise Linux for real time for nfv=7
redhat enterprise Linux for real time for nfv=8.0
redhat enterprise Linux for real time for nfv tus=8.2
redhat enterprise Linux for real time for nfv tus=8.4
redhat enterprise Linux for real time for nfv tus=8.6
redhat enterprise Linux for real time tus=8.2
redhat enterprise Linux for real time tus=8.4
redhat enterprise Linux for real time tus=8.6
redhat enterprise Linux server=7.0
redhat enterprise Linux server aus=8.2
redhat enterprise Linux server aus=8.4
redhat enterprise Linux server aus=8.6
redhat enterprise Linux server tus=8.2
redhat enterprise Linux server tus=8.4
redhat enterprise Linux server tus=8.6
redhat enterprise Linux workstation=7.0
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.16-1
Android
Linux kernel<=5.1.2
Fedora=29
Debian=8.0
Debian=9.0
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=18.04
Ubuntu=19.04
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server EUS=8.1
Red Hat Enterprise Linux Server EUS=8.2
Red Hat Enterprise Linux Server EUS=8.4
Red Hat Enterprise Linux Server EUS=8.6
Red Hat Enterprise Linux for Real Time=7
Red Hat Enterprise Linux for Real Time=8.0
Red Hat Enterprise Linux for Real Time for NFV=7
Red Hat Enterprise Linux for Real Time for NFV=8.0
Red Hat Enterprise Linux for Real Time for NFV=8.2
Red Hat Enterprise Linux for Real Time for NFV=8.4
Red Hat Enterprise Linux for Real Time for NFV=8.6
Red Hat Enterprise Linux for Real Time=8.2
Red Hat Enterprise Linux for Real Time=8.4
Red Hat Enterprise Linux for Real Time=8.6
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=8.2
Red Hat Enterprise Linux Server=8.4
Red Hat Enterprise Linux Server=8.6
Red Hat Enterprise Linux Server=8.2
Red Hat Enterprise Linux Server=8.4
Red Hat Enterprise Linux Server=8.6
Red Hat Enterprise Linux Workstation=7.0

Remedy

https://github.com/torvalds/linux/commit/592acbf16821288ecdc4192c47e3774a4c48bb64

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2019-11833?

    CVE-2019-11833 is classified as a medium severity vulnerability affecting the Linux kernel's ext4 filesystem.

  • How do I fix CVE-2019-11833?

    To fix CVE-2019-11833, update your system to the patched versions of the Linux kernel provided by your distribution.

  • Which systems are affected by CVE-2019-11833?

    CVE-2019-11833 affects various distributions of the Linux kernel including specific versions for Red Hat, Debian, and Ubuntu.

  • What type of vulnerability is CVE-2019-11833?

    CVE-2019-11833 is a memory initialization flaw that may allow local users to read uninitialized data from the filesystem.

  • Is CVE-2019-11833 exploitable remotely?

    CVE-2019-11833 is not exploitable remotely; it requires local access to the affected system.

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