CVE-2018-14625: Race Condition
First published: Mon Jul 30 2018(Updated: )
A flaw was found in Linux Kernel in which an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest. A race condition between connect() and close() function may allow an attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly intercept or corrupt AF_VSOCK messages destined to other clients. Introduced by: <a href="https://github.com/torvalds/linux/commit/433fc58e6bf2c8bd97e57153ed28e64fd78207b8">https://github.com/torvalds/linux/commit/433fc58e6bf2c8bd97e57153ed28e64fd78207b8</a> References: <a href="https://syzkaller.appspot.com/bug?extid=bd391451452fb0b93039">https://syzkaller.appspot.com/bug?extid=bd391451452fb0b93039</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How 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-alt | <0:4.14.0-115.16.1.el7a | 0:4.14.0-115.16.1.el7a |
| Linux kernel | ||
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =18.10 | |
| 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
- https://www.cve.org/CVERecord?id=CVE-2018-14625 https://nvd.nist.gov/vuln/detail/CVE-2018-14625
- https://bugzilla.redhat.com/show_bug.cgi?id=1619846
- https://access.redhat.com/errata/RHSA-2019:2043
- https://access.redhat.com/errata/RHSA-2019:2029
- https://access.redhat.com/errata/RHSA-2019:4154
- https://access.redhat.com/security/cve/cve-2018-14625
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14625
- https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
- https://syzkaller.appspot.com/bug?extid=bd391451452fb0b93039
- https://usn.ubuntu.com/3871-1/
- https://usn.ubuntu.com/3871-3/
- https://usn.ubuntu.com/3871-4/
- https://usn.ubuntu.com/3871-5/
- https://usn.ubuntu.com/3872-1/
- https://usn.ubuntu.com/3878-1/
- https://usn.ubuntu.com/3878-2/
- https://github.com/torvalds/linux/commit/433fc58e6bf2c8bd97e57153ed28e64fd78207b8
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619847
- https://launchpad.net/bugs/cve/CVE-2018-14625
- https://security-tracker.debian.org/tracker/CVE-2018-14625
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14625
- https://nvd.nist.gov/vuln/detail/CVE-2018-14625
- https://ubuntu.com/security/CVE-2018-14625
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2018-14625?
CVE-2018-14625 is classified as a medium severity vulnerability due to the potential for information leakage.
How do I fix CVE-2018-14625?
To fix CVE-2018-14625, update your Linux kernel to a patched version as specified in the security advisories for your distribution.
What kind of attack does CVE-2018-14625 enable?
CVE-2018-14625 allows an attacker to perform an uncontrolled read from kernel memory within a VM guest.
Which systems are affected by CVE-2018-14625?
CVE-2018-14625 affects various versions of the Linux kernel across multiple distributions including Red Hat, Debian, and Ubuntu.
What protocol is involved in CVE-2018-14625?
CVE-2018-14625 involves the AF_VSOCK protocol which may be exploited to gather sensitive information.
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