CVE-2025-49175

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering extension animated cursors

MEDIUM
6.1
CVSS Score
Published: June 17, 2025 at 02:39 PM UTC
Updated: June 30, 2026 at 01:16 AM UTC
2 products affected across 2 vendorsEnterprise LinuxXwayland

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A flaw was found in the X Rendering extension's handling of animated cursors. If a client provides no cursors, the server assumes at least one is present, leading to an out-of-bounds read and potential crash.

Affected

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

Vendor states this is fixed in 0:1.1.0-25.el6_10.1 (unaffected)
Vendor states this is fixed in 0:1.11.0-22.el9_0.15 (unaffected)
Vendor states this is fixed in 0:1.11.0-8.el8_4.13 (unaffected)
Vendor states this is fixed in 0:1.12.0-14.el9_2.12 (unaffected)
Vendor states this is fixed in 0:1.12.0-15.el8_8.14 (unaffected)
Vendor states this is fixed in 0:1.12.0-6.el8_6.14 (unaffected)
Vendor states this is fixed in 0:1.13.1-8.el9_4.7 (unaffected)
Vendor states this is fixed in 0:1.14.1-8.el9_6 (unaffected)
Vendor states this is fixed in 0:1.15.0-7.el8_10 (unaffected)
Vendor states this is fixed in 0:1.20.10-2.el8_4 (unaffected)
Vendor states this is fixed in 0:1.20.11-11.el9_0 (unaffected)
Vendor states this is fixed in 0:1.20.11-16.el8_8 (unaffected)
Vendor states this is fixed in 0:1.20.11-18.el9_2 (unaffected)
Vendor states this is fixed in 0:1.20.11-26.el8_10 (unaffected)
Vendor states this is fixed in 0:1.20.11-26.el9_4 (unaffected)
Vendor states this is fixed in 0:1.20.11-31.el9_6 (unaffected)
Vendor states this is fixed in 0:1.20.11-5.el8_6.3 (unaffected)
Vendor states this is fixed in 0:1.20.4-32.el7_9 (unaffected)
Vendor states this is fixed in 0:1.20.6-4.el8_2 (unaffected)
Vendor states this is fixed in 0:1.8.0-36.el7_9.2 (unaffected)
Vendor states this is fixed in 0:1.9.0-15.el8_2.14 (unaffected)
Vendor states this is fixed in 0:21.1.3-11.el8_8 (unaffected)
Vendor states this is fixed in 0:21.1.3-18.el8_10 (unaffected)
Vendor states this is fixed in 0:21.1.3-2.el8_6.4 (unaffected)
Vendor states this is fixed in 0:21.1.3-3.el9_0 (unaffected)
Vendor states this is fixed in 0:21.1.3-8.el9_2 (unaffected)
Vendor states this is fixed in 0:22.1.9-6.el9_4 (unaffected)
Vendor states this is fixed in 0:23.2.7-4.el9_6 (unaffected)
Vendor states this is fixed in 0:24.1.5-4.el10_0 (unaffected)
v < 24.1.8
Affected range stops below 24.1.8, so it looks safe — our inference, not a vendor statement

References (34)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

6.1MEDIUMredhat
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-125

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