CVE-2017-12192: Null Pointer Dereference
First published: Wed Sep 20 2017(Updated: )
A vulnerability in the Key Management sub component was found in the Linux kernel. Trying to KEYTCL_READ on negative key would lead to a NULL pointer dereference. A local attacker could use this flaw to crash the kernel. References: <a href="https://lkml.org/lkml/2017/9/18/764">https://lkml.org/lkml/2017/9/18/764</a> <a href="http://seclists.org/oss-sec/2017/q4/63">http://seclists.org/oss-sec/2017/q4/63</a> An upstream patch: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=4.13.4 | |
| 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://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
- https://access.redhat.com/errata/RHSA-2018:0151
- https://bugzilla.redhat.com/show_bug.cgi?id=1493435
- https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678
- https://lkml.org/lkml/2017/9/18/764
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
- https://launchpad.net/bugs/cve/CVE-2017-12192
- http://seclists.org/oss-sec/2017/q4/63
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1493436
- https://access.redhat.com/errata/RHSA-2020:2430
- https://git.kernel.org/linus/37863c43b2c6464f252862bf2e9768264e961678
- https://git.kernel.org/linus/61ea0c0ba904a55f55317d850c1072ff7835ac92
- https://security-tracker.debian.org/tracker/CVE-2017-12192
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12192
- https://nvd.nist.gov/vuln/detail/CVE-2017-12192
- https://ubuntu.com/security/CVE-2017-12192
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2017-12192.
What is the severity level of CVE-2017-12192?
CVE-2017-12192 has a medium severity level.
How does this vulnerability impact the Linux kernel versions?
This vulnerability affects Linux kernel versions before 4.13.5.
What is the impact of CVE-2017-12192?
CVE-2017-12192 allows local users to cause a denial of service (OOPS and system crash).
Is there a fix available for CVE-2017-12192?
Yes, the fix is available in Linux kernel version 4.13.5 and higher.
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