| Name | CVE-2026-48914 |
| Description | A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process. |
| 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 | 1139923 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| qemu (PTS) | bullseye | 1:5.2+dfsg-11+deb11u3 | vulnerable |
| bullseye (security) | 1:5.2+dfsg-11+deb11u5 | vulnerable | |
| bookworm | 1:7.2+dfsg-7+deb12u18 | vulnerable | |
| bookworm (security) | 1:7.2+dfsg-7+deb12u15 | vulnerable | |
| trixie | 1:10.0.8+ds-0+deb13u1 | vulnerable | |
| trixie (security) | 1:10.0.2+ds-2+deb13u1 | vulnerable | |
| forky | 1:11.0.1+ds-1 | vulnerable | |
| sid | 1:11.0.2+ds-1 | 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) | 1:11.0.2+ds-1 | 1139923 |
[trixie] - qemu <no-dsa> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2488283
Introduced with: https://gitlab.com/qemu-project/qemu/-/commit/f34e73cd69bdbdb9b1d56b288c5e14d6fff58165 (v1.1.0-rc3)
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/f5e2c6906cad9a84140e232f2e3eb7a46bf07f62 (v11.0.2)