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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qemu | 1:2.7+dfsg-1 | — |
| Debian 13 | qemu | 1:2.7+dfsg-1 | — |
| Debian 12 | qemu | 1:2.7+dfsg-1 | — |
| Debian 8 | qemu | 1:2.1+dfsg-12+deb8u8 | DLA-1599-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | qemu | 1:2.5+dfsg-5ubuntu10.6 | USN-3125-1 |
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.30 | USN-3125-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | qemu | 2.3.1-24.6 | SUSE-SU-2016:2988-1 |
| SLES 12 | qemu | 2.0.2-48.25.1 | SUSE-SU-2016:2936-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | qemu | 2.3.1-24.6 | SUSE-SU-2016:2988-1 |
| SLES for SAP 12 | qemu | 2.0.2-48.25.1 | SUSE-SU-2016:2936-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qemu | 6.1.0-32.1 | openSUSE-SU-2024:11287-1 |
Advisories 5
- DLA-1599-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3125-1 qemu, qemu-kvm vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2016:2936-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2988-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11287-1 qemu-6.1.0-32.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- [qemu-devel] 20160915 [PULL 07/17] scsi: pvscsi: limit process IO loop to ring size mailing-list
- GLSA-201609-01 vendor-advisory
- 92998 vdb-entry
- [oss-security] 20160916 Re: CVE Request: Qemu: scsi: pvscsi: infinite loop when processing IO requests mailing-list
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d251157ac1928191af851d199a9ff255d330bec9
- [debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security update mailing-list
- [oss-security] 20160916 CVE Request: Qemu: scsi: pvscsi: infinite loop when processing IO requests mailing-list