Description
In the Linux kernel, the following vulnerability has been resolved: module: ensure that kobject_put() is safe for module type kobjects In 'lookup_or_create_module_kobject()', an internal kobject is created using 'module_ktype'. So call to 'kobject_put()' on error handling path causes an attempt to use an uninitialized completion pointer in 'module_kobject_release()'. In this scenario, we just want to release kobject without an extra synchronization required for a regular module unloading process, so adding an extra check whether 'complete()' is actually required makes 'kobject_put()' safe.
Product status
942e443127e928a5631c3d5102aca8c8b3c2dd98 (git) before 93799fb988757cdacf19acba57807746c00378e6
942e443127e928a5631c3d5102aca8c8b3c2dd98 (git) before a63d99873547d8b39eb2f6db79dd235761e7098a
942e443127e928a5631c3d5102aca8c8b3c2dd98 (git) before f1c71b4bd721a4ea21da408806964b10468623f2
942e443127e928a5631c3d5102aca8c8b3c2dd98 (git) before 9e7b49ce4f9d0cb5b6e87db9e07a2fb9e754b0dd
942e443127e928a5631c3d5102aca8c8b3c2dd98 (git) before faa9059631d3491d699c69ecf512de9e1a3d6649
942e443127e928a5631c3d5102aca8c8b3c2dd98 (git) before d63851049f412cdfadaeef7a7eaef5031d11c1e9
942e443127e928a5631c3d5102aca8c8b3c2dd98 (git) before 31d8df3f303c3ae9115230820977ef8c35c88808
942e443127e928a5631c3d5102aca8c8b3c2dd98 (git) before a6aeb739974ec73e5217c75a7c008a688d3d5cf1
3.12
Any version before 3.12
5.4.294 (semver)
5.10.238 (semver)
5.15.183 (semver)
6.1.139 (semver)
6.6.91 (semver)
6.12.29 (semver)
6.14.7 (semver)
6.15 (original_commit_for_fix)
References
lists.debian.org/debian-lts-announce/2025/10/msg00007.html
lists.debian.org/debian-lts-announce/2025/08/msg00010.html
git.kernel.org/...c/93799fb988757cdacf19acba57807746c00378e6
git.kernel.org/...c/a63d99873547d8b39eb2f6db79dd235761e7098a
git.kernel.org/...c/f1c71b4bd721a4ea21da408806964b10468623f2
git.kernel.org/...c/9e7b49ce4f9d0cb5b6e87db9e07a2fb9e754b0dd
git.kernel.org/...c/faa9059631d3491d699c69ecf512de9e1a3d6649
git.kernel.org/...c/d63851049f412cdfadaeef7a7eaef5031d11c1e9
git.kernel.org/...c/31d8df3f303c3ae9115230820977ef8c35c88808
git.kernel.org/...c/a6aeb739974ec73e5217c75a7c008a688d3d5cf1