Description
The slirp_smb function in net/slirp.c in QEMU 2.3.0 and earlier creates temporary files with predictable names, which allows local users to cause a denial of service (instantiation failure) by creating /tmp/qemu-smb.*-* files before the program.
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 | 1:2.3+dfsg-5 | — |
| Debian 13 | qemu | 1:2.3+dfsg-5 | — |
| Debian 12 | qemu | 1:2.3+dfsg-5 | — |
| Debian 8 | qemu | 1:2.1+dfsg-12+deb8u1 | DSA-3284-1 |
| Debian 7 | qemu-kvm | 1.1.2+dfsg-6+deb7u8 | DSA-3285-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.13 | USN-2630-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | qemu | 2.0.2-48.4.1 | SUSE-SU-2015:1519-1 |
| SLES 12 | xen | 4.4.3_02-22.12.1 | SUSE-SU-2015:1908-1 |
| SLES 11 SP4 | xen | 4.4.3_02-26.2 | SUSE-SU-2015:1894-1 |
| SLES 11 SP3 | xen | 4.2.5_14-18.2 | SUSE-SU-2015:1853-1 |
| SLES 11 SP2 | xen | 4.1.6_08-20.1 | SUSE-SU-2015:1952-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | qemu | 2.0.2-48.4.1 | SUSE-SU-2015:1519-1 |
| SLES for SAP 12 | xen | 4.4.3_02-22.12.1 | SUSE-SU-2015:1908-1 |
| SLES for SAP 11 SP4 | xen | 4.4.3_02-26.2 | SUSE-SU-2015:1894-1 |
| SLES for SAP 11 SP3 | xen | 4.2.5_14-18.2 | SUSE-SU-2015:1853-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Advisories 9
- DSA-3284-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3285-1 qemu-kvm - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2630-1 qemu, qemu-kvm vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2015:1519-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1952-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1894-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1853-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1908-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10196-1 xen-4.7.0_12-1.3 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- USN-2630-1 vendor-advisory
- SUSE-SU-2015:1152 vendor-advisory
- [oss-security] 20150523 Re: QEMU 2.3.0 tmp vulns CVE request mailing-list
- SUSE-SU-2015:1519 vendor-advisory
- FEDORA-2015-9599 vendor-advisory
- FEDORA-2015-9601 vendor-advisory
- [oss-security] 20150516 Re: QEMU 2.3.0 tmp vulns CVE request mailing-list
- DSA-3284 vendor-advisory
- 1032547 vdb-entry
- openSUSE-SU-2015:1965 vendor-advisory
- 74809 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1222892
- [oss-security] 20150513 QEMU 2.3.0 tmp vulns CVE request mailing-list
- DSA-3285 vendor-advisory