Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2025-49176

Integer Overflow or Wraparound

Published: Jun 17, 2025 | Modified: Jul 07, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.3 IMPORTANT
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Ubuntu
MEDIUM
Vulnerability-free packages from our partners
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2025-49176
CWEhttps://cwe.mitre.org/data/definitions/190.html

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.

Weakness

The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.

Affected Software

Name Vendor Start Version End Version
Red Hat Enterprise Linux 10 RedHat xorg-x11-server-Xwayland-0:24.1.5-4.el10_0 *
Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION RedHat tigervnc-0:1.1.0-25.el6_10.1 *
Red Hat Enterprise Linux 7.7 Advanced Update Support RedHat tigervnc-0:1.8.0-17.el7_7.1 *
Red Hat Enterprise Linux 7 Extended Lifecycle Support RedHat xorg-x11-server-0:1.20.4-32.el7_9 *
Red Hat Enterprise Linux 7 Extended Lifecycle Support RedHat tigervnc-0:1.8.0-36.el7_9.2 *
Red Hat Enterprise Linux 8 RedHat xorg-x11-server-0:1.20.11-26.el8_10 *
Red Hat Enterprise Linux 8 RedHat xorg-x11-server-Xwayland-0:21.1.3-18.el8_10 *
Red Hat Enterprise Linux 8 RedHat tigervnc-0:1.15.0-7.el8_10 *
Red Hat Enterprise Linux 8.2 Advanced Update Support RedHat tigervnc-0:1.9.0-15.el8_2.14 *
Red Hat Enterprise Linux 8.2 Advanced Update Support RedHat xorg-x11-server-0:1.20.6-4.el8_2 *
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support RedHat xorg-x11-server-0:1.20.10-2.el8_4 *
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support RedHat tigervnc-0:1.11.0-8.el8_4.13 *
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On RedHat xorg-x11-server-0:1.20.10-2.el8_4 *
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On RedHat tigervnc-0:1.11.0-8.el8_4.13 *
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support RedHat tigervnc-0:1.12.0-6.el8_6.14 *
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support RedHat xorg-x11-server-Xwayland-0:21.1.3-2.el8_6.4 *
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support RedHat xorg-x11-server-0:1.20.11-5.el8_6.3 *
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On RedHat tigervnc-0:1.12.0-6.el8_6.14 *
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On RedHat xorg-x11-server-Xwayland-0:21.1.3-2.el8_6.4 *
Red Hat Enterprise Linux 8.6 Telecommunications Update Service RedHat tigervnc-0:1.12.0-6.el8_6.14 *
Red Hat Enterprise Linux 8.6 Telecommunications Update Service RedHat xorg-x11-server-Xwayland-0:21.1.3-2.el8_6.4 *
Red Hat Enterprise Linux 8.6 Telecommunications Update Service RedHat xorg-x11-server-0:1.20.11-5.el8_6.3 *
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions RedHat tigervnc-0:1.12.0-6.el8_6.14 *
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions RedHat xorg-x11-server-Xwayland-0:21.1.3-2.el8_6.4 *
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions RedHat xorg-x11-server-0:1.20.11-5.el8_6.3 *
Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On RedHat xorg-x11-server-0:1.20.11-16.el8_8 *
Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On RedHat xorg-x11-server-Xwayland-0:21.1.3-11.el8_8 *
Red Hat Enterprise Linux 8.8 Telecommunications Update Service RedHat xorg-x11-server-0:1.20.11-16.el8_8 *
Red Hat Enterprise Linux 8.8 Telecommunications Update Service RedHat tigervnc-0:1.12.0-15.el8_8.14 *
Red Hat Enterprise Linux 8.8 Telecommunications Update Service RedHat xorg-x11-server-Xwayland-0:21.1.3-11.el8_8 *
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions RedHat xorg-x11-server-0:1.20.11-16.el8_8 *
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions RedHat tigervnc-0:1.12.0-15.el8_8.14 *
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions RedHat xorg-x11-server-Xwayland-0:21.1.3-11.el8_8 *
Red Hat Enterprise Linux 9 RedHat xorg-x11-server-0:1.20.11-31.el9_6 *
Red Hat Enterprise Linux 9 RedHat xorg-x11-server-Xwayland-0:23.2.7-4.el9_6 *
Red Hat Enterprise Linux 9 RedHat tigervnc-0:1.14.1-8.el9_6 *
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions RedHat xorg-x11-server-Xwayland-0:21.1.3-3.el9_0 *
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions RedHat xorg-x11-server-0:1.20.11-11.el9_0 *
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions RedHat tigervnc-0:1.11.0-22.el9_0.15 *
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions RedHat xorg-x11-server-Xwayland-0:21.1.3-8.el9_2 *
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions RedHat xorg-x11-server-0:1.20.11-18.el9_2 *
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions RedHat tigervnc-0:1.12.0-14.el9_2.12 *
Red Hat Enterprise Linux 9.4 Extended Update Support RedHat xorg-x11-server-Xwayland-0:22.1.9-6.el9_4 *
Red Hat Enterprise Linux 9.4 Extended Update Support RedHat xorg-x11-server-0:1.20.11-26.el9_4 *
Red Hat Enterprise Linux 9.4 Extended Update Support RedHat tigervnc-0:1.13.1-8.el9_4.7 *
Xorg-server Ubuntu devel *
Xorg-server Ubuntu esm-infra/bionic *
Xorg-server Ubuntu esm-infra/focal *
Xorg-server Ubuntu esm-infra/xenial *
Xorg-server Ubuntu jammy *
Xorg-server Ubuntu noble *
Xorg-server Ubuntu oracular *
Xorg-server Ubuntu plucky *
Xorg-server Ubuntu upstream *
Xorg-server-hwe-16.04 Ubuntu esm-infra/xenial *
Xorg-server-hwe-18.04 Ubuntu esm-infra/bionic *
Xwayland Ubuntu devel *
Xwayland Ubuntu jammy *
Xwayland Ubuntu noble *
Xwayland Ubuntu oracular *
Xwayland Ubuntu plucky *
Xwayland Ubuntu upstream *

Potential Mitigations

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • If possible, choose a language or compiler that performs automatic bounds checking.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • Use libraries or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]
  • Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
  • Use unsigned integers where possible. This makes it easier to perform validation for integer overflows. When signed integers are required, ensure that the range check includes minimum values as well as maximum values.
  • Understand the programming language’s underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, “not-a-number” calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
  • Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.

References

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