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CVE-2025-49176— Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension

CVSS 7.3 · High EPSS 0.22% · P45
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I. Basic Information for CVE-2025-49176

Vulnerability Information
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Vulnerability Title
Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
X.org Big Requests 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
X.org Big Requests是X.org基金会的一个扩展软件。 X.org Big Requests存在输入验证错误漏洞，该漏洞源于请求长度检查不当，可能导致整数溢出和绕过大小检查。
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

VendorProductAffected VersionsCPESubscribe
X.Orgxwayland 0 ~ 24.1.7 -
Red HatRed Hat Enterprise Linux 10 0:24.1.5-4.el10_0 ~ * cpe:/o:redhat:enterprise_linux:10.0
Red HatRed Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION 0:1.1.0-25.el6_10.1 ~ * cpe:/o:redhat:rhel_els:6
Red HatRed 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 HatRed Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.20.4-32.el7_9 ~ * cpe:/o:redhat:rhel_els:7
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.8.0-36.el7_9.2 ~ * cpe:/o:redhat:rhel_els:7
Red HatRed Hat Enterprise Linux 8 0:1.20.11-26.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::crb
Red HatRed Hat Enterprise Linux 8 0:21.1.3-18.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::crb
Red HatRed Hat Enterprise Linux 8 0:1.15.0-7.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red HatRed 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 HatRed Hat Enterprise Linux 8.2 Advanced Update Support 0:1.20.6-4.el8_2 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed 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 HatRed Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On 0:1.20.11-16.el8_8 ~ * cpe:/a:redhat:rhel_eus_long_life:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On 0:21.1.3-11.el8_8 ~ * cpe:/a:redhat:rhel_eus_long_life:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service 0:1.20.11-16.el8_8 ~ * cpe:/a:redhat:rhel_eus_long_life:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service 0:1.12.0-15.el8_8.14 ~ * cpe:/a:redhat:rhel_tus:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service 0:21.1.3-11.el8_8 ~ * cpe:/a:redhat:rhel_eus_long_life:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:1.20.11-16.el8_8 ~ * cpe:/a:redhat:rhel_eus_long_life:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:1.12.0-15.el8_8.14 ~ * cpe:/a:redhat:rhel_tus:8.8::appstream
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:21.1.3-11.el8_8 ~ * cpe:/a:redhat:rhel_eus_long_life:8.8::appstream
Red HatRed Hat Enterprise Linux 9 0:1.20.11-31.el9_6 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9 0:23.2.7-4.el9_6 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9 0:1.14.1-8.el9_6 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:21.1.3-3.el9_0 ~ * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:1.20.11-11.el9_0 ~ * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:1.11.0-22.el9_0.15 ~ * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:21.1.3-8.el9_2 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.20.11-18.el9_2 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.12.0-14.el9_2.12 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support 0:22.1.9-6.el9_4 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support 0:1.20.11-26.el9_4 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support 0:1.13.1-8.el9_4.7 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6

II. Public POCs for CVE-2025-49176

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III. Intelligence Information for CVE-2025-49176

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

CVE-2025-491807.8 HIGHXorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate
CVE-2025-491797.3 HIGHXorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extensio
CVE-2025-491756.1 MEDIUMXorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering ext
CVE-2025-491776.1 MEDIUMXorg-x11-server-xwayland: xorg-x11-server: tigervnc: data leak in xfixes extension's xfixe
CVE-2025-491785.5 MEDIUMXorg-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-190

V. Comments for CVE-2025-49176

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