CVE-2025-21898
ftrace: Avoid potential division by zero in function_stat_show()
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ftrace: Avoid potential division by zero in function_stat_show()
In the Linux kernel, the following vulnerability has been resolved: ftrace: Avoid potential division by zero in function_stat_show() Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64} produce zero and skip stddev computation in that case. For now don't care about rec->counter * rec->counter overflow because rec->time * rec->time overflow will likely happen earlier.
Reserved 2024-12-29 | Published 2025-04-01 | Updated 2025-05-04 | Assigner Linuxgit.kernel.org/...c/5b3d32f607f0478b414b16516cf27f9170cf66c8
git.kernel.org/...c/ca381f60a3bb7cfaa618d73ca411610bd7fc3149
git.kernel.org/...c/3d738b53ed6cddb68e68c9874520a4bf846163b5
git.kernel.org/...c/992775227843c9376773784b8b362add44592ad7
git.kernel.org/...c/f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3
git.kernel.org/...c/746cc474a95473591853927b3a9792a2d671155b
git.kernel.org/...c/9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6
git.kernel.org/...c/a1a7eb89ca0b89dc1c326eeee2596f263291aca3
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