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CVE-2025-39909— mm/damon/lru_sort: avoid divide-by-zero in damon_lru_sort_apply_parameters()

EPSS 0.02% · P5

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux40e983cca9274e177bd5b9379299b44d9536ac68< 74e391f7da7d9d5235a3cca88ee9fc18f720c75baffected
40e983cca9274e177bd5b9379299b44d9536ac68< 7bb675c9f0257840d33e5d1337d7e3afdd74a6bfaffected
40e983cca9274e177bd5b9379299b44d9536ac68< af0ae62b935317bed1a1361c8c9579db9d300e70affected
40e983cca9274e177bd5b9379299b44d9536ac68< 326a4b3750c71af3f3c52399ec4dbe33b6da4c26affected
40e983cca9274e177bd5b9379299b44d9536ac68< 711f19dfd783ffb37ca4324388b9c4cb87e71363affected
6.0affected
< 6.0unaffected
6.1.153≤ 6.1.*unaffected
… +4 more rows
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I. Basic Information for CVE-2025-39909

Vulnerability Information
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Vulnerability Title
mm/damon/lru_sort: avoid divide-by-zero in damon_lru_sort_apply_parameters()
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未验证用户配置参数，可能导致除零错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 40e983cca9274e177bd5b9379299b44d9536ac68 ~ 74e391f7da7d9d5235a3cca88ee9fc18f720c75b -
LinuxLinux 6.0 -

II. Public POCs for CVE-2025-39909

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III. Intelligence Information for CVE-2025-39909

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Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

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Showing top 20 of 169 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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