| Name | CVE-2026-81627 |
| Description | A flaw was found in QEMU. The VAPIC setup hypercall in hw/i386/vapic.c does not validate that the writable RAM alias remains within the option ROM window. A privileged guest user on a Q35/KVM machine can position this alias over locked SMRAM, bypassing chipset D_LCK protection and injecting code into System Management Mode memory. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1148473 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| qemu (PTS) | bookworm | 1:7.2+dfsg-7+deb12u18 | vulnerable |
| bookworm (security) | 1:7.2+dfsg-7+deb12u15 | vulnerable | |
| trixie | 1:10.0.13+ds-0+deb13u1 | vulnerable | |
| trixie (security) | 1:10.0.2+ds-2+deb13u1 | vulnerable | |
| forky | 1:11.1.2+ds-1 | fixed | |
| sid | 1:11.1.2+ds-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| qemu | source | (unstable) | 1:11.1.2+ds-1 | 1148473 |
[trixie] - qemu <no-dsa> (Minor issue)
https://gitlab.com/qemu-project/qemu/-/work_items/4206
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/d61c8a6fb7388486353aa267ba0d75b098f16662 (master)
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/d79bb5387c137fc6603ecfd56a47d47138ed9adf (v11.1.2)
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/c9cfa87402ca7ec40817397416b6567d76bb8611 (v10.0.14)