CVE-2025-49180: Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate and reflect (randr) extension

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-17 · updated 2026-06-30
Weakness: CWE-190

Description

A flaw was found in the RandR extension, where the RRChangeProviderProperty function does not properly validate input. This issue leads to an integer overflow when computing the total size to allocate.

Affected products

Red Hat Enterprise Linux 10: all versions — fixed in 0:24.1.5-4.el10_0
Red Hat Enterprise Linux 6: all versions
Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION: all versions — fixed in 0:1.1.0-25.el6_10.1
Red Hat Enterprise Linux 7.7 Advanced Update Support: all versions — fixed in 0:1.8.0-17.el7_7.1
Red Hat Enterprise Linux 7 Extended Lifecycle Support: all versions — fixed in 0:1.20.4-32.el7_9, 0:1.8.0-36.el7_9.2
Red Hat Enterprise Linux 8: all versions — fixed in 0:1.15.0-7.el8_10, 0:1.20.11-26.el8_10, 0:21.1.3-18.el8_10
Red Hat Enterprise Linux 8.2 Advanced Update Support: all versions — fixed in 0:1.20.6-4.el8_2, 0:1.9.0-15.el8_2.14
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: all versions — fixed in 0:1.11.0-8.el8_4.13, 0:1.20.10-2.el8_4
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: all versions — fixed in 0:1.11.0-8.el8_4.13, 0:1.20.10-2.el8_4
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: all versions — fixed in 0:1.12.0-6.el8_6.14, 0:1.20.11-5.el8_6.3, 0:21.1.3-2.el8_6.4
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: all versions — fixed in 0:1.12.0-6.el8_6.14, 0:21.1.3-2.el8_6.4
Red Hat Enterprise Linux 8.6 Telecommunications Update Service: all versions — fixed in 0:1.12.0-6.el8_6.14, 0:1.20.11-5.el8_6.3, 0:21.1.3-2.el8_6.4
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions: all versions — fixed in 0:1.12.0-6.el8_6.14, 0:1.20.11-5.el8_6.3, 0:21.1.3-2.el8_6.4
Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On: all versions — fixed in 0:1.20.11-16.el8_8, 0:21.1.3-11.el8_8
Red Hat Enterprise Linux 8.8 Telecommunications Update Service: all versions — fixed in 0:1.12.0-15.el8_8.14, 0:1.20.11-16.el8_8, 0:21.1.3-11.el8_8
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: all versions — fixed in 0:1.12.0-15.el8_8.14, 0:1.20.11-16.el8_8, 0:21.1.3-11.el8_8
Red Hat Enterprise Linux 9: all versions — fixed in 0:1.14.1-8.el9_6, 0:1.20.11-31.el9_6, 0:23.2.7-4.el9_6
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions: all versions — fixed in 0:1.11.0-22.el9_0.15, 0:1.20.11-11.el9_0, 0:21.1.3-3.el9_0
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: all versions — fixed in 0:1.12.0-14.el9_2.12, 0:1.20.11-18.el9_2, 0:21.1.3-8.el9_2
Red Hat Enterprise Linux 9.4 Extended Update Support: all versions — fixed in 0:1.13.1-8.el9_4.7, 0:1.20.11-26.el9_4, 0:22.1.9-6.el9_4
X.Org xwayland: before 24.1.7 — fixed in 24.1.7

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 10 0:24.1.5-4.el10_0; Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION 0:1.1.0-25.el6_10.1; Red Hat Enterprise Linux 7.7 Advanced Update Support 0:1.8.0-17.el7_7.1; Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.20.4-32.el7_9, 0:1.8.0-36.el7_9.2; Red Hat Enterprise Linux 8 0:1.15.0-7.el8_10, 0:1.20.11-26.el8_10, 0:21.1.3-18.el8_10; Red Hat Enterprise Linux 8.2 Advanced Update Support 0:1.20.6-4.el8_2, 0:1.9.0-15.el8_2.14; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.11.0-8.el8_4.13, 0:1.20.10-2.el8_4; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:1.11.0-8.el8_4.13, 0:1.20.10-2.el8_4; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:1.12.0-6.el8_6.14, 0:1.20.11-5.el8_6.3, 0:21.1.3-2.el8_6.4; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:1.12.0-6.el8_6.14, 0:21.1.3-2.el8_6.4; Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:1.12.0-6.el8_6.14, 0:1.20.11-5.el8_6.3, 0:21.1.3-2.el8_6.4; Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:1.12.0-6.el8_6.14, 0:1.20.11-5.el8_6.3, 0:21.1.3-2.el8_6.4. Check the vendor advisory for mitigations.

References

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