[Low] Patch libxml2 for CVE-2025-8732

[Ratiranjan5]

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-2025-8732
• Upstream patch has been backported manually.
• Added the depth argument to the xmlExpandCatalog() function definition.
• Kept all upstream changes intact.
• Upstream Patch Reference: https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/337

Change Log

• new file: SPECS/libxml2/CVE-2025-8732.patch
• modified: SPECS/libxml2/libxml2.spec

Does this affect the toolchain?

YES

Associated issues

Links to CVEs

• https://nvd.nist.gov/vuln/detail/CVE-2025-8732

Test Methodology

• Local build was successful.

• Log:
  libxml2-2.10.4-11.cm2.src.rpm.log

• Patch applies cleanly.

• Check Installation:

• Check Uninstallation:

[Kanishk-Bansal]

Buddy Build

[Ratiranjan5]

Buddy Build

Buddy Build has passed.

[mayankfz]

Patch looks fine. Buddy build passes.
Full Build - https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1046920&view=results

[mayankfz]

https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1046961&view=results

rabbitmq-server seems to be failing but it is a known issue in elixir elixir-lang/elixir#12506 for v1.14.3, rebuilding solves this mostly.

[mayankfz]

https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1046961&view=results

rabbitmq-server seems to be failing but it is a known issue in elixir [elixir-lang/elixir#12506](https://github.com/elixir-lang/elixir/issues/12506) for v1.14.3, rebuilding solves this mostly.

Reran the build - https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1047454&view=results
rabbitmq-server passes and now some other packages build failed, which passed in the previous run.

[kgodara912]

Please resolve the merge conflicts.

[Ratiranjan5]

Please resolve the merge conflicts.

Resolved the merge conflicts.

[kgodara912]

Buddy build after rebase.

[Ratiranjan5]

Buddy build after rebase.

Buddy build has passed.

[kgodara912]

Patch functionally matches with upstream reference. Buddy build and full build are successful except few known fluctuating failures. LGTM.