Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/lru_sort: avoid divide-by-zero in damon_lru_sort_apply_parameters() Patch series "mm/damon: avoid divide-by-zero in DAMON module's parameters application". DAMON's RECLAIM and LRU_SORT modules perform no validation on user-configured parameters during application, which may lead to division-by-zero errors. Avoid the divide-by-zero by adding validation checks when DAMON modules attempt to apply the parameters. This patch (of 2): During the calculation of 'hot_thres' and 'cold_thres', either 'sample_interval' or 'aggr_interval' is used as the divisor, which may lead to division-by-zero errors. Fix it by directly returning -EINVAL when such a case occurs. Additionally, since 'aggr_interval' is already required to be set no smaller than 'sample_interval' in damon_set_attrs(), only the case where 'sample_interval' is zero needs to be checked.
Product status
40e983cca9274e177bd5b9379299b44d9536ac68 before 74e391f7da7d9d5235a3cca88ee9fc18f720c75b
40e983cca9274e177bd5b9379299b44d9536ac68 before 7bb675c9f0257840d33e5d1337d7e3afdd74a6bf
40e983cca9274e177bd5b9379299b44d9536ac68 before af0ae62b935317bed1a1361c8c9579db9d300e70
40e983cca9274e177bd5b9379299b44d9536ac68 before 326a4b3750c71af3f3c52399ec4dbe33b6da4c26
40e983cca9274e177bd5b9379299b44d9536ac68 before 711f19dfd783ffb37ca4324388b9c4cb87e71363
6.0
Any version before 6.0
6.1.153
6.6.107
6.12.48
6.16.8
6.17
References
git.kernel.org/...c/74e391f7da7d9d5235a3cca88ee9fc18f720c75b
git.kernel.org/...c/7bb675c9f0257840d33e5d1337d7e3afdd74a6bf
git.kernel.org/...c/af0ae62b935317bed1a1361c8c9579db9d300e70
git.kernel.org/...c/326a4b3750c71af3f3c52399ec4dbe33b6da4c26
git.kernel.org/...c/711f19dfd783ffb37ca4324388b9c4cb87e71363
