[High] Patch libxml2 for CVE-2025-7425

[akhila-guruju]

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./LICENSES-AND-NOTICES/SPECS/data/licenses.json, ./LICENSES-AND-NOTICES/SPECS/LICENSES-MAP.md, ./LICENSES-AND-NOTICES/SPECS/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

---

Summary

Patch libxml2 for CVE-2025-7425
This is a mitigation patch. While the issue is underlying in libxslt (and the CVE assigned for it), a
mitigation can be implemented in src:libxml2.

Patch Backported: Yes
Adjusted patch according to our version.
in valid.c
all the attr->atype instances are replaced with XML_ATTR_GET_ATYPE(attr). Origin patch contains smaller number of these instances.
Reference taken from Redhat fix: RedHat fix: libxml2-2.9.13-CVE-2025-7425.patch

Change Log

• new file: SPECS/libxml2/CVE-2025-7425.patch
• modified: SPECS/libxml2/libxml2.spec
• modified: toolkit/resources/manifests/package/pkggen_core_aarch64.txt
• modified: toolkit/resources/manifests/package/pkggen_core_x86_64.txt
• modified: toolkit/resources/manifests/package/toolchain_aarch64.txt
• modified: toolkit/resources/manifests/package/toolchain_x86_64.txt

Does this affect the toolchain?

YES

Associated issues

• https://gitlab.gnome.org/GNOME/libxslt/-/issues/140

Links to CVEs

• https://nvd.nist.gov/vuln/detail/CVE-2025-7425

Test Methodology

• Local Build
• Patch applies cleanly

[Kanishk-Bansal]

Buddy Build

[akhila-guruju]

Buddy Build has passed.

[Kanishk-Bansal]

/azurepipelines run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[akhila-guruju]

Resolved Merge conflicts

[Kanishk-Bansal]

/azurepipelines run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Kanishk-Bansal]

Patch has been taken from https://git.rockylinux.org/staging/rpms/libxml2/-/blob/r9/SOURCES/libxml2-2.9.13-CVE-2025-7425.patch which applies cleanly.

%autosetup -n %{name}-v%{version} -p1 ensures patch application

• Buddy Build 
• patch applied during the build (check rpm.log)
• patch include an upstream reference
• PR has security tag

[CBL-Mariner-Bot]

Auto cherry-pick results:

• 3.0-dev ✅ -> [AUTO-CHERRYPICK] [High] Patch libxml2 for CVE-2025-7425 - branch 3.0-dev #15510

Auto cherry-pick pipeline run -> https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1027221&view=results