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CVE-2025-49175— Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering extension animated cursors

Quick assessment

Affected
X.Org xwayland
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

X.org X Rendering是X.org基金会的一款X11核心协议的扩展。 X.org X Rendering存在缓冲区错误漏洞，该漏洞源于动画光标处理不当，可能导致越界读取和崩溃。

CVSS 6.1 · Medium EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 47

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 0:24.1.5-4.el10_0< * unaffected
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION 0:1.1.0-25.el6_10.1< * unaffected
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.20.4-32.el7_9< * unaffected
0:1.8.0-36.el7_9.2< * unaffected
Red Hat Red Hat Enterprise Linux 7.7 Advanced Update Support 0:1.8.0-17.el7_7.1< * unaffected
Red Hat Red Hat Enterprise Linux 8 0:1.20.11-26.el8_10< * unaffected
0:21.1.3-18.el8_10< * unaffected
0:1.15.0-7.el8_10< * unaffected
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:1.9.0-15.el8_2.14< * unaffected
0:1.20.6-4.el8_2< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.20.10-2.el8_4< * unaffected
0:1.11.0-8.el8_4.13< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:1.20.10-2.el8_4< * unaffected
0:1.11.0-8.el8_4.13< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:1.12.0-6.el8_6.14< * unaffected
0:21.1.3-2.el8_6.4< * unaffected
0:1.20.11-5.el8_6.3< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:1.12.0-6.el8_6.14< * unaffected
0:21.1.3-2.el8_6.4< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:1.12.0-6.el8_6.14< * unaffected
0:21.1.3-2.el8_6.4< * unaffected
0:1.20.11-5.el8_6.3< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:1.12.0-6.el8_6.14< * unaffected
0:21.1.3-2.el8_6.4< * unaffected
0:1.20.11-5.el8_6.3< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On 0:1.20.11-16.el8_8< * unaffected
0:21.1.3-11.el8_8< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:1.20.11-16.el8_8< * unaffected
0:1.12.0-15.el8_8.14< * unaffected
0:21.1.3-11.el8_8< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:1.20.11-16.el8_8< * unaffected
0:1.12.0-15.el8_8.14< * unaffected
0:21.1.3-11.el8_8< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:1.20.11-31.el9_6< * unaffected
0:23.2.7-4.el9_6< * unaffected
0:1.14.1-8.el9_6< * unaffected
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:21.1.3-3.el9_0< * unaffected
0:1.20.11-11.el9_0< * unaffected
0:1.11.0-22.el9_0.15< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:21.1.3-8.el9_2< * unaffected
0:1.20.11-18.el9_2< * unaffected
0:1.12.0-14.el9_2.12< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:22.1.9-6.el9_4< * unaffected
0:1.20.11-26.el9_4< * unaffected
0:1.13.1-8.el9_4.7< * unaffected
X.Org xwayland < 24.1.8 affected
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I. Basic Information for CVE-2025-49175

Vulnerability Information
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Vulnerability Title
Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering extension animated cursors
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
X.org X Rendering 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
X.org X Rendering是X.org基金会的一款X11核心协议的扩展。 X.org X Rendering存在缓冲区错误漏洞，该漏洞源于动画光标处理不当，可能导致越界读取和崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
X.Org xwayland 0 ~ 24.1.8 -
Red Hat Red Hat Enterprise Linux 10 0:24.1.5-4.el10_0 ~ * cpe:/o:redhat:enterprise_linux:10.0
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION 0:1.1.0-25.el6_10.1 ~ * cpe:/o:redhat:rhel_els:6
Red Hat Red Hat Enterprise Linux 7.7 Advanced Update Support 0:1.8.0-17.el7_7.1 ~ * cpe:/o:redhat:rhel_aus:7.7::server
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.20.4-32.el7_9 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.8.0-36.el7_9.2 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 0:1.20.11-26.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:21.1.3-18.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:1.15.0-7.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:1.9.0-15.el8_2.14 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:1.20.6-4.el8_2 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.20.10-2.el8_4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.11.0-8.el8_4.13 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:1.20.10-2.el8_4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:1.11.0-8.el8_4.13 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:1.12.0-6.el8_6.14 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:21.1.3-2.el8_6.4 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:1.20.11-5.el8_6.3 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:1.12.0-6.el8_6.14 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:21.1.3-2.el8_6.4 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:1.12.0-6.el8_6.14 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:21.1.3-2.el8_6.4 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:1.20.11-5.el8_6.3 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:1.12.0-6.el8_6.14 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:21.1.3-2.el8_6.4 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:1.20.11-5.el8_6.3 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On 0:1.20.11-16.el8_8 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On 0:21.1.3-11.el8_8 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:1.20.11-16.el8_8 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:1.12.0-15.el8_8.14 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream

II. Public POCs for CVE-2025-49175

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III. Intelligence Information for CVE-2025-49175

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Patches & Fixes for CVE-2025-49175 (1)

Vendor Advisories for CVE-2025-49175 (29)

Other References for CVE-2025-49175 (1)

Same Patch Batch · X.Org · 2025-06-17 · 6 CVEs total

CVE-2025-49180 7.8 HIGH Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate
CVE-2025-49176 7.3 HIGH Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests exte
CVE-2025-49179 7.3 HIGH Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extensio
CVE-2025-49177 6.1 MEDIUM Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: data leak in xfixes extension's xfixe
CVE-2025-49178 5.5 MEDIUM Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: unprocessed client request due to byt

IV. Related Vulnerabilities

Same product: xwayland
Same vendor: X.Org
Same weakness: CWE-125

V. Comments for CVE-2025-49175

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