| Name | CVE-2022-4144 |
| Description | An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qemu (PTS) | buster | 1:3.1+dfsg-8+deb10u8 | vulnerable |
| buster (security) | 1:3.1+dfsg-8+deb10u11 | vulnerable |
| bullseye | 1:5.2+dfsg-11+deb11u3 | vulnerable |
| bullseye (security) | 1:5.2+dfsg-11+deb11u2 | vulnerable |
| bookworm | 1:7.2+dfsg-7+deb12u2 | fixed |
| trixie | 1:8.1.2+ds-1 | fixed |
| sid | 1:8.1.3+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) | 1:7.2+dfsg-1 | | | |
Notes
[bullseye] - qemu <ignored> (Minor issue)
[buster] - qemu <postponed> (Minor issue, DoS)
https://bugzilla.redhat.com/show_bug.cgi?id=2148506
https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg04143.html
https://gitlab.com/qemu-project/qemu/-/issues/1336
Pre-requisite 1: https://gitlab.com/qemu-project/qemu/-/commit/61c34fc194b776ecadc39fb26b061331107e5599 (v7.2.0-rc3)
Pre-requisite 2: https://gitlab.com/qemu-project/qemu/-/commit/8efec0ef8bbc1e75a7ebf6e325a35806ece9b39f (v7.2.0-rc3)
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/6dbbf055148c6f1b7d8a3251a65bd6f3d1e1f622 (v7.2.0-rc3)