CVE-2023-45919: Mesa 23.0.4 was discovered to contain a buffer over-read in glXQueryServerString()

Routine

MEDIUM 5.3DOWNGRADE

CVE-2023-45919 is a medium-severity flaw (CVSS 5.3) affecting mesa. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Mesa 23.0.4 was discovered to contain a buffer over-read in glXQueryServerString(). NOTE: this is disputed because there are no common situations in which users require uninterrupted operation with an attacker-controller server.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-126
Published	2024-03-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mesa3d

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-03-27 05:15 UTCPublished CVE record published
2026-06-17 06:29 UTCUpdated Record last modified

mesa3d mesa DOWNGRADE

Affected: 23.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 23.0.4

1. Check installed version

apt-cache policy mesa || rpm -q mesa || mesa --version

2. No fixed release: DOWNGRADE to a release before 23.0.4 (Debian / Ubuntu)

apt-cache madison mesa sudo apt install mesa=<VERSION_BEFORE_23.0.4> sudo apt-mark hold mesa

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mesa sudo dnf downgrade mesa-<VERSION_BEFORE_23.0.4> sudo dnf versionlock add mesa

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-45919?

mesa: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-45919 being exploited?

CVE-2023-45919 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-45919 affect?

CVE-2023-45919 affects mesa. Severity is medium (CVSS 5.3). Mesa 23.0.4 was discovered to contain a buffer over-read in glXQueryServerString(). NOTE: this is disputed because there are no common situations in which users require uninterrupted operation with an attacker-controller server.

How urgent is CVE-2023-45919?

Priority 32/100. Public exploit reference

Related CVEs

CVE-2026-40393 HIGH 8.1 UPGRADE In Mesa before 25.3.6 and 26 before 26.0.1, out-of-bounds memory access can occur in WebGPU because the amount
CVE-2026-29075 HIGH 8.3 UPGRADE Mesa is an open-source Python library for agent-based modeling, simulating complex systems and exploring emerg
CVE-2023-45931 HIGH 7.5 DOWNGRADE Mesa 23.0.4 was discovered to contain a NULL pointer dereference in check_xshm() for the has_error state
CVE-2023-45922 MEDIUM 4.3 DOWNGRADE glx_pbuffer.c in Mesa 23.0.4 was discovered to contain a segmentation violation when calling __glXGetDrawableA
CVE-2023-45913 MEDIUM 6.2 DOWNGRADE Mesa v23.0.4 was discovered to contain a NULL pointer dereference via the function dri2GetGlxDrawableFromXDraw

References

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