🛡️ CVE-2023-5367 — debian-linux
Description
A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Local — a local account, shell or session on the host is needed.
- Attack complexity: Low — the attack works reliably, with no preparation.
- Privileges required: Low — an ordinary user account is enough.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: High — total loss, or loss the attacker controls.
- Integrity impact: High — total loss, or loss the attacker controls.
- Availability impact: High — total loss, or loss the attacker controls.
Weakness class
CVE-2023-5367 is classified as CWE-787: Out-of-bounds Write. Data is written past the end or before the start of a buffer, corrupting whatever is stored there.
Affected software
CVE-2023-5367 is recorded against 12 packages.
- debian-linux
- enterprise-linux
- enterprise-linux-desktop
- enterprise-linux-for-ibm-z-systems
- enterprise-linux-for-power-big-endian
- enterprise-linux-for-power-little-endian
- enterprise-linux-for-scientific-computing
- enterprise-linux-server
- enterprise-linux-workstation
- fedora
- x-server (fixed in 21.1.9)
- xwayland (fixed in 23.2.2)
Timeline and source
Published on 25 October 2023 and last revised on 23 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.
References
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lists.x.org
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bugzilla.redhat.com
lists.debian.org
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
Other advisories for this package
debian-linux has other advisories on record. If you are patching this one, these are worth checking on the same host:
- CVE-2026-12996 (8.1 High, published 30 Jul 2026)
- CVE-2026-14355 (5.6 Medium, published 3 Jul 2026)
- CVE-2026-56968 (3.7 Low, published 23 Jun 2026)
- CVE-2026-49975 (7.5 High, published 8 Jun 2026)
- CVE-2026-9256 (8.1 High, published 22 May 2026)
- CVE-2026-46333 (7.1 High, published 15 May 2026)
- CVE-2026-31431 (7.8 High, published 22 Apr 2026)
- CVE-2026-41082 (7.3 High, published 16 Apr 2026)
Same weakness in other software
These advisories are the same class of weakness (CWE-787: Out-of-bounds Write) in other software:
- CVE-2022-29208 (8.0 High, published 9 Jul 2026)
- CVE-2022-23561 (8.0 High, published 9 Jul 2026)
- CVE-2019-9423 (8.0 High, published 9 Jul 2026)
- CVE-2018-5268 (published 9 Jul 2026)
- CVE-2017-12606 (8.0 High, published 9 Jul 2026)
- CVE-2019-5063 (8.0 High, published 9 Jul 2026)
- CVE-2017-12605 (8.0 High, published 9 Jul 2026)
- CVE-2017-12603 (8.0 High, published 2 Jul 2026)
CVE-2023-5367 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| debian-linux | — | — |
| enterprise-linux | — | — |
| enterprise-linux-desktop | — | — |
| enterprise-linux-for-ibm-z-systems | — | — |
| enterprise-linux-for-power-big-endian | — | — |
| enterprise-linux-for-power-little-endian | — | — |
| enterprise-linux-for-scientific-computing | — | — |
| enterprise-linux-server | — | — |
| enterprise-linux-workstation | — | — |
| fedora | — | — |
| x-server | — | 21.1.9 |
| xwayland | — | 23.2.2 |
References
Similar Threats
- Critical CVE-2022-0194
- High CVE-2022-0367
- Medium CVE-2022-0171
- High CVE-2022-0135
- High CVE-2022-0204
Site Security Check
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