CVE-2016-2197: Null Pointer Dereference
First published: Tue Jan 26 2016(Updated: )
Last updated 24 July 2024
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU qemu | <=2.5.1.1 | |
| debian/qemu | 1:5.2+dfsg-11+deb11u3 1:5.2+dfsg-11+deb11u2 1:7.2+dfsg-7+deb12u7 1:9.0.2+ds-2 1:9.1.0+ds-3 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2016/01/29/2
- http://www.openwall.com/lists/oss-security/2016/01/30/1
- http://www.securityfocus.com/bid/82235
- https://bugzilla.redhat.com/show_bug.cgi?id=1302057
- https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05742.html
- https://security.gentoo.org/glsa/201604-01
- https://launchpad.net/bugs/cve/CVE-2016-2197
- https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg06114.html
- https://access.redhat.com/support/policy/updates/errata/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1302952
- http://git.qemu.org/?p=qemu.git;a=commit;h=99b4cb71069f109b79b27bc629fc0cf0886dbc4b
- https://www.openwall.com/lists/oss-security/2016/01/29/2
- http://git.qemu.org/?p=qemu.git;a=commit;h=fc3d8e1138cd0c843d6fd75272633a31be6554ef
- https://security-tracker.debian.org/tracker/CVE-2016-2197
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2197
- https://nvd.nist.gov/vuln/detail/CVE-2016-2197
- https://ubuntu.com/security/CVE-2016-2197
Frequently Asked Questions
What is CVE-2016-2197?
CVE-2016-2197 is a vulnerability in QEMU that allows a privileged user inside the guest to crash the QEMU process.
How does CVE-2016-2197 occur?
CVE-2016-2197 occurs due to a null pointer dereference flaw while unmapping the Frame Information Structure (FIS) and Command List Block (CLB) entries in QEMU with IDE AHCI emulation support.
What is the severity of CVE-2016-2197?
The severity of CVE-2016-2197 is medium with a CVSS score of 5.5 (out of 10).
Which software versions are affected by CVE-2016-2197?
QEMU versions 1:2.3+dfsg-5ubuntu9.2 (Ubuntu wily) up to inclusive version 2.5.1.1 (QEMU qemu) are affected. There are also multiple affected versions in Debian.
How can CVE-2016-2197 be fixed?
To fix CVE-2016-2197, update QEMU to the recommended versions: 1:3.1+dfsg-8+deb10u8, 1:3.1+dfsg-8+deb10u11, 1:5.2+dfsg-11+deb11u3, 1:5.2+dfsg-11+deb11u2, 1:7.2+dfsg-7+deb12u2, or 1:8.1.2+ds-1.
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