Harden modulemd_module_add_... functions against null-pointer dereferences - #641
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ppisar merged 3 commits intoAug 11, 2026
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…ences When the function checks that a module name of the module and the translations are equal, g_str_equal() functions is called. That function does not handle NULL arguments. While we do not pass modules or translations with NULL names to this private function now, it's better to hardern the function against it. This patch adds more preconditions to modulemd_module_add_translation() in order to prevent passing NULL to g_str_equal(). Again, automated tests are impossible becase Glib test framework fatalizes the preconditions.
When the function checks that a module name of the module and the obsoletes are equal, g_str_equal() functions is called. That function does not handle NULL arguments. While we do not pass modules or obsoletes with NULL names to this private function now, it's better to harden the function against it. This patch adds more preconditions to modulemd_module_add_obsoletes() in order to prevent passing NULL to g_str_equal(). Again, automated tests are impossible becase Glib test framework fatalizes the preconditions.
Signed-off-by: Libmodulemd CI <github-actions@github.com>
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sgallagher
approved these changes
Aug 10, 2026
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modulemd_module_add_obsoletes() and modulemd_module_add_translation() do not expect modules, translation, or obsletes objects with NULL module name. While it is not a problem in current use of these function, we cannot guarantee it in the future and we should add preconditions against the NULL names.
Found by Fedora 45 static analysis in August 2026 https://svashisht.fedorapeople.org/openscanhub/mass-scans/f45-03-Aug-2026/libmodulemd-2.15.3-3.fc45/scan-results.html.