Excessive Iteration Affecting qemu package, versions <1:2.7+dfsg-1
Snyk CVSS
Attack Complexity
Low
Privileges Required
High
Availability
High
Threat Intelligence
EPSS
0.06% (26th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN10-QEMU-427257
- published 10 Dec 2016
- disclosed 10 Dec 2016
Introduced: 10 Dec 2016
CVE-2016-7421 Open this link in a new tabHow to fix?
Upgrade Debian:10
qemu
to version 1:2.7+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu
package and not the qemu
package as distributed by Debian
.
See How to fix?
for Debian:10
relevant fixed versions and status.
The pvscsi_ring_pop_req_descr function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit process IO loop to the ring size.
References
- https://security-tracker.debian.org/tracker/CVE-2016-7421
- http://git.qemu.org/?p=qemu.git;a=commit;h=d251157ac1928191af851d199a9ff255d330bec9
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- https://security.gentoo.org/glsa/201609-01
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html
- http://www.openwall.com/lists/oss-security/2016/09/16/3
- http://www.openwall.com/lists/oss-security/2016/09/16/9
- http://www.securityfocus.com/bid/92998
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-7421
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d251157ac1928191af851d199a9ff255d330bec9