CVE-2024-31083 Xorg-x11-server: use-after-free in procrenderaddglyphs
An authenticated attacker can execute arbitrary code on the system by exploiting a use-after-free flaw in the Xorg server's glyph processing.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-31083?
CVE-2024-31083 is a high-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 5 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.
Weakness: CWE-416
Which versions are affected by CVE-2024-31083?
Linux distribution packages (3)
xorg-x11-server SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.19.6-10.74.1 |
xorg-x11-server SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.19.6-10.74.1 |
xorg-x11-server SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 1.19.6-10.74.1 |
How do I fix CVE-2024-31083?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2024-31083 being exploited?
There is no known exploitation of CVE-2024-31083 in the wild and no public exploit code.
Sources
Also known as AZL-39307, AZL-44382, BELL-CVE-2024-31083, DEBIAN-CVE-2024-31083, GHSA-q6w6-rjjj-5p52, SUSE-SU-2024:1263-1 and 1 more.