CVE-2021-4011
Published: 14 December 2021
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Notes
| Author | Note |
|---|---|
| mdeslaur | xorg server is actually the xorg-server package the xorg package only contains docs xwayland package contains parts of xorg-server This is ZDI-CAN-14952 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
xorg-server Launchpad, Ubuntu, Debian |
upstream |
Released
(21.1.2)
|
| bionic |
Released
(2:1.19.6-1ubuntu4.10)
|
|
| focal |
Released
(2:1.20.13-1ubuntu1~20.04.2)
|
|
| hirsute |
Released
(2:1.20.11-1ubuntu1.2)
|
|
| impish |
Released
(2:1.20.13-1ubuntu1.1)
|
|
| trusty |
Released
(2:1.15.1-0ubuntu2.11+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| xenial |
Released
(2:1.18.4-0ubuntu0.12+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| jammy |
Released
(2:1.20.13-1ubuntu2)
|
|
| kinetic |
Released
(2:1.20.13-1ubuntu2)
|
|
| lunar |
Released
(2:1.20.13-1ubuntu2)
|
|
|
Patches: upstream: https://gitlab.freedesktop.org/xorg/xserver/-/commit/e56f61c79fc3cee26d83cda0f84ae56d5979f768 |
||
|
xwayland Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| xenial |
Does not exist
|
|
| bionic |
Does not exist
|
|
| focal |
Does not exist
|
|
| hirsute |
Released
(2:21.1.1-0ubuntu1.1)
|
|
| impish |
Released
(2:21.1.2-0ubuntu1.1)
|
|
| upstream |
Released
(21.1.4)
|
|
| jammy |
Released
(2:21.1.3-1ubuntu1)
|
|
| kinetic |
Released
(2:21.1.3-1ubuntu1)
|
|
| lunar |
Released
(2:21.1.3-1ubuntu1)
|
|
|
xorg-server-hwe-16.04 Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| bionic |
Does not exist
|
|
| focal |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(2:1.19.6-1ubuntu4.1~16.04.6+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
|
xorg-server-hwe-18.04 Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| xenial |
Does not exist
|
|
| focal |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| upstream |
Needs triage
|
|
| bionic |
Released
(2:1.20.8-2ubuntu2.2~18.04.6)
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |