CVE-2016-7421

MEDIUM 4.4CVE-2016-7421 · Published 10/12/2016 · updated 17/06/2026

In short

CVE-2016-7421 is a MEDIUM (CVSS 4.4) vulnerability affecting qemu (qemu).
Chance of exploitation in the next 30 days (EPSS): 0.40%, higher than 34.8% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
qemu qemu	`≤ 2.7.1`	No fix yet

Description

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

git.qemu.org
openwall.com/lists/oss-security/2016/09/16/3 · Mailing List
openwall.com/lists/oss-security/2016/09/16/9 · Mailing List
securityfocus.com/bid/92998 · Third Party Advisory
lists.debian.org/debian-lts-announce/2018/11/msg00038.html · Mailing List
lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html · Patch
security.gentoo.org/glsa/201609-01 · Third Party Advisory

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Package

Affected versions

Patched versions

qemu

≤ 2.7.1

No fix yet

More vulnerabilities in qemu

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