CVE-2025-49794— Libxml: heap use after free (uaf) leads to denial of service (dos)
I. Basic Information for CVE-2025-49794
Vulnerability Information
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Vulnerability Title
Libxml: heap use after free (uaf) leads to denial of service (dos)
Source: NVD (National Vulnerability Database)
Vulnerability Description
A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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，该漏洞源于解析XPath元素时存在释放后重用问题，可能导致程序崩溃或未定义行为。
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)
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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 Enterprise Linux 7 Extended Lifecycle Support | 0:2.9.1-6.el7_9.10 ~ * | cpe:/o:redhat:rhel_els:7 | |
| Red Hat | Red Hat Enterprise Linux 8 | 0:2.9.7-21.el8_10.1 ~ * | cpe:/o:redhat:enterprise_linux:8::baseos | |
| Red Hat | Red Hat Enterprise Linux 8 | 0:2.9.7-21.el8_10.1 ~ * | cpe:/o:redhat:enterprise_linux:8::baseos | |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | 0:2.9.7-9.el8_2.3 ~ * | cpe:/o:redhat:rhel_aus:8.2::baseos | |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 0:2.9.7-9.el8_4.6 ~ * | cpe:/o:redhat:rhel_eus_long_life:8.4::baseos | |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | 0:2.9.7-9.el8_4.6 ~ * | cpe:/o:redhat:rhel_eus_long_life:8.4::baseos | |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 0:2.9.7-13.el8_6.10 ~ * | cpe:/o:redhat:rhel_tus:8.6::baseos | |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | 0:2.9.7-13.el8_6.10 ~ * | cpe:/o:redhat:rhel_tus:8.6::baseos | |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | 0:2.9.7-13.el8_6.10 ~ * | cpe:/o:redhat:rhel_tus:8.6::baseos | |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | 0:2.9.7-16.el8_8.9 ~ * | cpe:/a:redhat:rhel_tus:8.8::appstream | |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | 0:2.9.7-16.el8_8.9 ~ * | cpe:/a:redhat:rhel_tus:8.8::appstream | |
| Red Hat | Red Hat Enterprise Linux 9 | 0:2.9.13-10.el9_6 ~ * | cpe:/a:redhat:enterprise_linux:9::appstream | |
| Red Hat | Red Hat Enterprise Linux 9 | 0:2.9.13-10.el9_6 ~ * | cpe:/a:redhat:enterprise_linux:9::appstream | |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | 0:2.9.13-1.el9_0.5 ~ * | cpe:/a:redhat:rhel_e4s:9.0::appstream | |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:2.9.13-3.el9_2.7 ~ * | cpe:/o:redhat:rhel_e4s:9.2::baseos | |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | 0:2.9.13-10.el9_4 ~ * | cpe:/a:redhat:rhel_eus:9.4::appstream | |
| Red Hat | Red Hat JBoss Core Services 2.4.62.SP2 | - | cpe:/a:redhat:jboss_core_services:1 | |
| Red Hat | Red Hat OpenShift Container Platform 4.12 | 412.86.202510291903-0 ~ * | cpe:/a:redhat:openshift:4.12::el8 | |
| Red Hat | Red Hat OpenShift Container Platform 4.13 | 413.92.202510150118-0 ~ * | cpe:/a:redhat:openshift:4.13::el9 | |
| Red Hat | Red Hat OpenShift Container Platform 4.14 | 414.92.202510211419-0 ~ * | cpe:/a:redhat:openshift:4.14::el9 | |
| Red Hat | Red Hat OpenShift Container Platform 4.17 | 417.94.202510112152-0 ~ * | cpe:/a:redhat:openshift:4.17::el9 | |
| Red Hat | Red Hat OpenShift Container Platform 4.18 | 418.94.202510230424-0 ~ * | cpe:/a:redhat:openshift:4.18::el9 | |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | 4.19.9.6.202510140714-0 ~ * | cpe:/a:redhat:openshift:4.19::el9 | |
| Red Hat | Red Hat OpenShift Container Platform 4.20 | 4.20.9.6.202509251656-0 ~ * | cpe:/a:redhat:openshift:4.20::el9 | |
| Red Hat | Red Hat Web Terminal 1.11 on RHEL 9 | 1.11-19 ~ * | cpe:/a:redhat:webterminal:1.11::el9 | |
| Red Hat | Red Hat Web Terminal 1.11 on RHEL 9 | 1.11-8 ~ * | cpe:/a:redhat:webterminal:1.11::el9 | |
| Red Hat | Red Hat Web Terminal 1.12 on RHEL 9 | 1.12-4 ~ * | cpe:/a:redhat:webterminal:1.12::el9 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-11 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-11 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-11 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-10 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-10 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-4 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-9 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-18 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-11 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | RHOSS-1.36-RHEL-8 | 1.36.0-7 ~ * | cpe:/a:redhat:openshift_serverless:1.36::el8 | |
| Red Hat | cert-manager operator for Red Hat OpenShift 1.16 | sha256:1abdfac084e7c86e7a93a19e5cf6b54db79b903bfb7474a42200f753b29eda4b ~ * | cpe:/a:redhat:cert_manager:1.16::el9 | |
| Red Hat | File Integrity Operator 1 | sha256:364d11af112a5b1d3f28c9ea8b7aac678e111b9c7fca0516d61036904f318605 ~ * | cpe:/a:redhat:openshift_file_integrity_operator:1::el9 | |
| Red Hat | Red Hat Hardened Images | 2.15.2-0.3.hum1 ~ * | cpe:/a:redhat:hummingbird:1 | |
| Red Hat | Red Hat Insights proxy 1.5 | sha256:c26d589f12647890b67aaa986f54d3f7c6f7f2563fb5a73f38d559e6138739d7 ~ * | cpe:/a:redhat:insights_proxy:1.5::el9 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 |
II. Public POCs for CVE-2025-49794
| # | POC Description | Source Link | Shenlong Link |
|---|
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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-2025-49794
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