CVE-2022-4144
Published: 29 November 2022
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
bionic |
Released
(1:2.11+dfsg-1ubuntu7.42+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(1:4.2-3ubuntu6.27)
|
|
| jammy |
Released
(1:6.2+dfsg-2ubuntu6.11)
|
|
| kinetic |
Released
(1:7.0+dfsg-7ubuntu2.6)
|
|
| lunar |
Not vulnerable
(1:7.2+dfsg-5ubuntu2)
|
|
| trusty |
Released
(2.0.0+dfsg-2ubuntu1.47+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Needs triage
|
|
| xenial |
Released
(1:2.5+dfsg-5ubuntu10.51+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://gitlab.com/qemu-project/qemu/-/commit/61c34fc1 upstream: https://gitlab.com/qemu-project/qemu/-/commit/b1901de8 upstream: https://gitlab.com/qemu-project/qemu/-/commit/8efec0ef upstream: https://gitlab.com/qemu-project/qemu/-/commit/6dbbf055 upstream: https://gitlab.com/qemu-project/qemu/-/commit/86fdb058 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |