CVE-2018-13053: Integer Overflow
First published: Mon Jul 02 2018(Updated: )
A flaw was found in the alarm_timer_nsleep() function in kernel/time/alarmtimer.c in the Linux kernel. The ktime_add_safe() function is not used and an integer overflow can happen causing an alarm not to fire or possibly a denial-of-service if using a large relative timeout. References: <a href="https://bugzilla.kernel.org/show_bug.cgi?id=200303">https://bugzilla.kernel.org/show_bug.cgi?id=200303</a> An upstream patch: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f936e19cc0ef97dbe3a56e9498922ad5ba1edef">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f936e19cc0ef97dbe3a56e9498922ad5ba1edef</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | <=4.17.3 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Debian | =8.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.17-1 |
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Reference Links
- http://www.securityfocus.com/bid/104671
- https://access.redhat.com/errata/RHSA-2019:0831
- https://access.redhat.com/errata/RHSA-2019:2029
- https://access.redhat.com/errata/RHSA-2019:2043
- https://bugzilla.kernel.org/show_bug.cgi?id=200303
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=5f936e19cc0ef97dbe3a56e9498922ad5ba1edef
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- https://usn.ubuntu.com/3821-1/
- https://usn.ubuntu.com/3821-2/
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4118-1/
- https://launchpad.net/bugs/cve/CVE-2018-13053
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f936e19cc0ef97dbe3a56e9498922ad5ba1edef
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1597748
- https://bugzilla.redhat.com/show_bug.cgi?id=1597747
- https://security-tracker.debian.org/tracker/CVE-2018-13053
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-13053
- https://nvd.nist.gov/vuln/detail/CVE-2018-13053
- https://ubuntu.com/security/CVE-2018-13053
Frequently Asked Questions
What is the severity of CVE-2018-13053?
CVE-2018-13053 has a high severity due to its potential to cause denial-of-service from integer overflow.
How do I fix CVE-2018-13053?
To fix CVE-2018-13053, update the Linux kernel to a version that includes the necessary patches, such as 5.10.223-1 or newer.
What versions of Linux are affected by CVE-2018-13053?
CVE-2018-13053 affects Linux kernel versions up to and including 4.17.3 and specific Ubuntu and Debian releases.
Can CVE-2018-13053 lead to remote code execution?
CVE-2018-13053 does not lead to remote code execution directly but can cause denial-of-service conditions.
What component of the Linux kernel does CVE-2018-13053 affect?
CVE-2018-13053 affects the alarm_timer_nsleep() function in the Linux kernel's alarm timer implementation.
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