Description
A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the environment and library usage.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
libexpat
Default version status: unaffected
0 to < 2.7.0affected
Red Hat Red Hat Enterprise Linux 10
Default version status: affected
0:2.7.1-1.el10_0 to < *unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
0:2.2.5-17.el8_10 to < *unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
0:1.51.0-11.el8_10 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
Default version status: affected
0:2.2.10-1.el8_2 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
Default version status: affected
0:1.51.0-5.el8_2.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Default version status: affected
0:2.2.10-1.el8_4 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Default version status: affected
0:1.51.0-5.el8_4.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Default version status: affected
0:2.2.10-1.el8_4 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service
Default version status: affected
0:1.51.0-5.el8_4.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
Default version status: affected
0:1.51.0-5.el8_4.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Default version status: affected
0:2.2.10-1.el8_6 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Default version status: affected
0:1.51.0-6.el8_6.1 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Default version status: affected
0:2.2.10-1.el8_6 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Default version status: affected
0:1.51.0-6.el8_6.1 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Default version status: affected
0:2.2.10-1.el8_6 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Default version status: affected
0:1.51.0-6.el8_6.1 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support
Default version status: affected
0:1.51.0-8.el8_8.1 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Default version status: affected
0:2.2.10-1.el8_8 to < *unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Default version status: affected
0:2.2.10-1.el8_8 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:2.5.0-3.el9_5.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:2.5.0-5.el9_6 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:2.5.0-3.el9_5.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:2.5.0-5.el9_6 to < *unaffected
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Default version status: affected
0:2.2.10-12.el9_0.4 to < *unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Default version status: affected
0:2.5.0-1.el9_2.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
Default version status: affected
0:2.5.0-2.el9_4.3 to < *unaffected
Red Hat Red Hat JBoss Core Services 2.4.62.SP1
Default version status: unaffected
Red Hat DevWorkspace Operator 0.33
Default version status: affected
0.33-1744075017 to < *unaffected
Red Hat Red Hat Discovery 1.14
Default version status: affected
1.14.3-1748529279 to < *unaffected
Red Hat Red Hat Discovery 1.14
Default version status: affected
1.14.2-1748467619 to < *unaffected
Red Hat Red Hat Enterprise Linux 6
Default version status: unknown
Red Hat Red Hat Enterprise Linux 6
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
Red Hat Red Hat Enterprise Linux 8
Default version status: unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
Red Hat Red Hat OpenShift Container Platform 4
Default version status: affected
Red Hat Red Hat OpenShift Container Platform 4
Default version status: affected
References
- https://access.redhat.com/errata/RHSA-2025:13681 ↗
- https://access.redhat.com/errata/RHSA-2025:22033 ↗
- https://access.redhat.com/errata/RHSA-2025:22034 ↗
- https://access.redhat.com/errata/RHSA-2025:22035 ↗
- https://access.redhat.com/errata/RHSA-2025:22607 ↗
- https://access.redhat.com/errata/RHSA-2025:22785 ↗
- https://access.redhat.com/errata/RHSA-2025:22842 ↗
- https://access.redhat.com/errata/RHSA-2025:22871 ↗
- https://access.redhat.com/errata/RHSA-2025:3531 ↗
- https://access.redhat.com/errata/RHSA-2025:3734 ↗
- https://access.redhat.com/errata/RHSA-2025:3913 ↗
- https://access.redhat.com/errata/RHSA-2025:4048 ↗
- https://access.redhat.com/errata/RHSA-2025:4446 ↗
- https://access.redhat.com/errata/RHSA-2025:4447 ↗
- https://access.redhat.com/errata/RHSA-2025:4448 ↗
- https://access.redhat.com/errata/RHSA-2025:4449 ↗
- https://access.redhat.com/errata/RHSA-2025:7444 ↗
- https://access.redhat.com/errata/RHSA-2025:7512 ↗
- https://access.redhat.com/errata/RHSA-2025:8385 ↗
- https://access.redhat.com/security/cve/CVE-2024-8176 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2310137 ↗
- https://github.com/libexpat/libexpat/issues/893 ↗
- https://github.com/libexpat/libexpat/pull/973 ↗
- http://www.openwall.com/lists/oss-security/2025/03/15/1 ↗
- https://blog.hartwork.org/posts/expat-2-7-0-released/ ↗
- https://github.com/libexpat/libexpat/blob/R_2_7_0/expat/Changes#L40-L52 ↗
- https://bugzilla.suse.com/show_bug.cgi?id=1239618 ↗
- https://ubuntu.com/security/CVE-2024-8176 ↗
- https://security-tracker.debian.org/tracker/CVE-2024-8176 ↗
- https://gitlab.alpinelinux.org/alpine/aports/-/commit/d068c3ff36fc6f4789988a09c69b434db757db53 ↗
- https://security.netapp.com/advisory/ntap-20250328-0009/ ↗
- https://www.kb.cert.org/vuls/id/760160 ↗
- http://seclists.org/fulldisclosure/2025/May/12 ↗
- http://seclists.org/fulldisclosure/2025/May/11 ↗
- http://seclists.org/fulldisclosure/2025/May/10 ↗
- http://seclists.org/fulldisclosure/2025/May/8 ↗
- http://seclists.org/fulldisclosure/2025/May/7 ↗
- http://seclists.org/fulldisclosure/2025/May/6 ↗
- http://www.openwall.com/lists/oss-security/2025/09/24/11 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html ↗