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SUSE: libxml2 Critical Denial Of Service Vulnerabilities CVE-2025-49794

suse
Calendar Grey July 15, 2025
Dist Suse Esm H88
This announcement outlines security issues present in the Fedora libxml2 impacting various applications, along with guidance for system updates.
* bsc#1244554 * bsc#1244555 * bsc#1244557 * bsc#1244590 * bsc#1244700

Summary

## This update for libxml2 fixes the following issues: * CVE-2025-49794: Fixed a heap use after free which could lead to denial of service. (bsc#1244554) * CVE-2025-49796: Fixed type confusion which could lead to denial of service. (bsc#1244557) * CVE-2025-49795: Fixed a null pointer dereference which could lead to denial of service. (bsc#1244555) * CVE-2025-6170: Fixed a stack buffer overflow which could lead to a crash. (bsc#1244700) * CVE-2025-6021: Fixed an integer overflow in xmlBuildQName() which could lead to stack buffer overflow. (bsc#1244590) ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * openSUSE Leap 15.5 zypper in -t patch SUSE-2025-2314=1

Topics%20covered

Topics Covered

security advisory denial of service SuSE software update important libxml2

References

* bsc#1244554

* bsc#1244555

* bsc#1244557

* bsc#1244590

* bsc#1244700

Cross-

* CVE-2025-49794

* CVE-2025-49795

* CVE-2025-49796

* CVE-2025-6021

* CVE-2025-6170

CVSS scores:

* CVE-2025-49794 ( SUSE ): 8.8

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

* CVE-2025-49794 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

* CVE-2025-49794 ( NVD ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

* CVE-2025-49795 ( SUSE ): 7.1

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

* CVE-2025-49795 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-49795 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-49796 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:02314-1
Release Date: 2025-07-15T12:34:31Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE software update important libxml2

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