Description
QEMU 0.8.2 allows local users to crash a virtual machine via the divisor operand to the aam instruction, as demonstrated by "aam 0x0," which triggers a divide-by-zero error.
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 | 0.9.0-2 | — |
| Debian 13 | qemu | 0.9.0-2 | — |
| Debian 12 | qemu | 0.9.0-2 | — |
| Debian 5.0 | kvm | 60+dfsg-1+lenny1 | DTSA-133-1 |
| Debian 5.0 | qemu | 0.8.2-5lenny1 | DTSA-38-1 |
| Debian 4.0 | qemu | 0.8.2-4etch1 | DSA-1284-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.1 | qemu | 0.6.1+20050407-1sarge1 | DSA-1284-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.15.1_01-1.2 | openSUSE-SU-2024:11520-1 |
Advisories 4
- DTSA-133-1 kvm - multiple vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1284-1 qemu Debian Security (DSA / DLA) · Mar 9, 2026
- DTSA-38-1 qemu - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11520-1 xen-4.15.1_01-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- 23731 vdb-entry
- DSA-1284 vendor-advisory
- 25073 third-party-advisory
- http://taviso.decsystem.org/virtsec.pdf
- [Qemu-devel] 20070428 Qemu crashes on AAM 0 mailing-list
- MDVSA-2008:162 vendor-advisory
- 35498 vdb-entry
- ADV-2007-1597 vdb-entry
- 29129 third-party-advisory
- 25095 third-party-advisory
- qemu-aam-dos(34046) vdb-entry
- [Qemu-devel] 20070429 Re: Qemu crashes on AAM 0 mailing-list