Description
QEMU (aka Quick Emulator) built with an IDE AHCI emulation support is vulnerable to a null pointer dereference flaw. It occurs while unmapping the Frame Information Structure (FIS) and Command List Block (CLB) entries. A privileged user inside guest could use this flaw to crash the QEMU process instance resulting in DoS.
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 | 1:2.6+dfsg-1 | — |
| Debian 13 | qemu | 1:2.6+dfsg-1 | — |
| Debian 12 | qemu | 1:2.6+dfsg-1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | qemu | 2.3.1-14.1 | SUSE-SU-2016:1703-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | qemu | 2.3.1-14.1 | SUSE-SU-2016:1703-1 |
Advisories 1
- SUSE-SU-2016:1703-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
References
- 82235 vdb-entry
- [qemu-devel] 20160129 CVE request Qemu: ide: ahci null pointer dereference when using FIS CLB engines mailing-list
- GLSA-201604-01 vendor-advisory
- [qemu-devel] 20160130 Re: CVE request Qemu: ide: ahci null pointer dereference when using FIS CLB engines mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1302057
- [qemu-devel] 20160128 [PATCH v2] ide: ahci: add check before calling dma_memory_unmap mailing-list