CVE-2024-0408

Xorg-x11-server: selinux unlabeled glx pbuffer

MEDIUM
5.5
CVSS Score
Published: January 18, 2024 at 03:40 PM UTC
Updated: June 17, 2026 at 06:53 AM UTC
12 products affected across 4 vendorsFedoraEnterprise LinuxEnterprise Linux Desktop

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 0:1.20.11-22.el8 (unaffected)
Vendor states this is fixed in 0:1.20.11-24.el9 (unaffected)
Vendor states this is fixed in 0:1.20.4-27.el7_9 (unaffected)
Vendor states this is fixed in 0:21.1.3-15.el8 (unaffected)
Vendor states this is fixed in 0:22.1.9-5.el9 (unaffected)
Vendor states this is fixed in 7 (unaffected)
Vendor states this is fixed in 6 (unknown)
v < 1.13.1
Affected range stops below 1.13.1, so it looks safe — our inference, not a vendor statement

References (13)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2024:0320
VDB Entryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2024-0408
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2024/01/msg00016.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMredhat
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-158NVD-CWE-Other

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