CVE-2025-49795— Libxml: null pointer dereference leads to denial of service (dos)
I. Basic Information for CVE-2025-49795
Vulnerability Information
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Vulnerability Title
Libxml: null pointer dereference leads to denial of service (dos)
Source: NVD (National Vulnerability Database)
Vulnerability Description
A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
无效指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
libxml2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libxml2是GNOME开源的一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用，例如C语言，C++，XSH。 libxml2存在安全漏洞，该漏洞源于处理XPath XML表达式时存在空指针取消引用问题，可能导致拒绝服务。
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 |
|---|---|---|---|---|
| - | - | 0 ~ 2.15.0 | - | |
| Red Hat | Red Hat Enterprise Linux 10 | 0:2.12.5-7.el10_0 ~ * | cpe:/o:redhat:enterprise_linux:10.0 | |
| Red Hat | Red Hat JBoss Core Services 2.4.62.SP2 | - | cpe:/a:redhat:jboss_core_services:1 | |
| Red Hat | Red Hat Hardened Images | 2.15.2-0.3.hum1 ~ * | cpe:/a:redhat:hummingbird:1 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 |
II. Public POCs for CVE-2025-49795
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|---|
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IV. Related Vulnerabilities
Same weakness: CWE-825
- CVE-2026-7111
Text::CSV_XS versions before 1.62 for Perl have a use-after- - CVE-2026-34001
Xorg: xwayland: x.org x server: use-after-free vulnerability - CVE-2026-35094
Libinput: libinput: information disclosure via dangling poin - CVE-2026-5165
Virtio-win: virtio-win: memory corruption via use-after-free - CVE-2026-2436
Libsoup: libsoup: denial of service via use-after-free in so
V. Comments for CVE-2025-49795
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