CVE-2025-39909
published 2025-10-01CVE-2025-39909: 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…
medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
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
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.153-1 (bookworm) | linux 6.1.153-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.153-1 (bookworm) | linux 6.1.153-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 40e983cca9274e177bd5b9379299b44d9536ac68 < 74e391f7da7d9d5235a3cca88ee9fc18f720c75b | 74e391f7da7d9d5235a3cca88ee9fc18f720c75b |
| linux | linux | >= 40e983cca9274e177bd5b9379299b44d9536ac68 < 7bb675c9f0257840d33e5d1337d7e3afdd74a6bf | 7bb675c9f0257840d33e5d1337d7e3afdd74a6bf |
| linux | linux | >= 40e983cca9274e177bd5b9379299b44d9536ac68 < af0ae62b935317bed1a1361c8c9579db9d300e70 | af0ae62b935317bed1a1361c8c9579db9d300e70 |
| linux | linux | >= 40e983cca9274e177bd5b9379299b44d9536ac68 < 326a4b3750c71af3f3c52399ec4dbe33b6da4c26 | 326a4b3750c71af3f3c52399ec4dbe33b6da4c26 |
| linux | linux | >= 40e983cca9274e177bd5b9379299b44d9536ac68 < 711f19dfd783ffb37ca4324388b9c4cb87e71363 | 711f19dfd783ffb37ca4324388b9c4cb87e71363 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.1.153-1 | 6.1.153-1 |
| linux | linux_kernel | >= 0 < 6.12.48-1 | 6.12.48-1 |
| linux | linux_kernel | >= 0 < 6.16.8-1 | 6.16.8-1 |
| linux | linux_kernel | >= 0 < 6.8.0-106.106 | 6.8.0-106.106 |
| linux | linux_kernel | >= 6.0 < 6.1.153 | 6.1.153 |
| linux | linux_kernel | >= 6.13 < 6.16.8 | 6.16.8 |
| linux | linux_kernel | >= 6.2 < 6.6.107 | 6.6.107 |
| linux | linux_kernel | >= 6.7 < 6.12.48 | 6.12.48 |
| msrc | azl3_kernel_6.6.104.2-4_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.96.2-2_on_azure_linux_3.0 | — | — |
| ubuntu | linux-xilinx | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM