Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-50264

35
FAUCET Score

An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.

First published: Jun 5, 2026Last modified: Jul 13, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 21.1.23CPE matchmatch criteria
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
< 24.1.12CPE matchmatch criteria
cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
4.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0015 is in the 20th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-50264.json
access.redhat.com / errata/RHSA-2026:26562
access.redhat.com / errata/RHSA-2026:26566
access.redhat.com / errata/RHSA-2026:26590
access.redhat.com / errata/RHSA-2026:26610
access.redhat.com / errata/RHSA-2026:26709
access.redhat.com / errata/RHSA-2026:28923
access.redhat.com / errata/RHSA-2026:29844
access.redhat.com / errata/RHSA-2026:36083
access.redhat.com / errata/RHSA-2026:36085
access.redhat.com / errata/RHSA-2026:36086
access.redhat.com / errata/RHSA-2026:36087
access.redhat.com / errata/RHSA-2026:36632
access.redhat.com / errata/RHSA-2026:36633
access.redhat.com / errata/RHSA-2026:36634
access.redhat.com / errata/RHSA-2026:36768
access.redhat.com / errata/RHSA-2026:36791
access.redhat.com / errata/RHSA-2026:36792
access.redhat.com / errata/RHSA-2026:36798
access.redhat.com / errata/RHSA-2026:38502
access.redhat.com / errata/RHSA-2026:38810
access.redhat.com / security/cve/CVE-2026-50264
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
gitlab.freedesktop.org / xorg/xserver/-/commit/339c279514326134b0878fc23ce6e9520440ce7f
Patch
lists.x.org / archives/xorg-announce/2026-June/003702.html
Mailing ListVendor Advisory
redhat.atlassian.net / browse/PSIRTSUPT-16950
Permissions Required