Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 40e983cca9274e177bd5b9379299b44d9536ac68 before 74e391f7da7d9d5235a3cca88ee9fc18f720c75b; affected 40e983cca9274e177bd5b9379299b44d9536ac68 before 7bb675c9f0257840d33e5d1337d7e3afdd74a6bf; affected 40e983cca9274e177bd5b9379299b44d9536ac68 before af0ae62b935317bed1a1361c8c9579db9d300e70; affected 40e983cca9274e177bd5b9379299b44d9536ac68 before 326a4b3750c71af3f3c52399ec4dbe33b6da4c26; affected 40e983cca9274e177bd5b9379299b44d9536ac68 before 711f19dfd783ffb37ca4324388b9c4cb87e71363 |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.1.153 through 6.1.*; unaffected 6.6.107 through 6.6.*; unaffected 6.12.48 through 6.12.*; unaffected 6.16.8 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/74e391f7da7d9d5235a3cca88ee9fc18f720c75b
- https://git.kernel.org/stable/c/7bb675c9f0257840d33e5d1337d7e3afdd74a6bf
- https://git.kernel.org/stable/c/af0ae62b935317bed1a1361c8c9579db9d300e70
- https://git.kernel.org/stable/c/326a4b3750c71af3f3c52399ec4dbe33b6da4c26
- https://git.kernel.org/stable/c/711f19dfd783ffb37ca4324388b9c4cb87e71363
ADP enrichment
No English description supplied.