CVE-2025-39795

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Source
https://cve.org/CVERecord?id=CVE-2025-39795
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39795.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-39795
Downstream
Related
Published
2025-09-12T15:59:32.037Z
Modified
2026-03-20T12:43:03.470575Z
Summary
block: avoid possible overflow for chunk_sectors check in blk_stack_limits()
Details

In the Linux kernel, the following vulnerability has been resolved:

block: avoid possible overflow for chunksectors check in blkstack_limits()

In blkstacklimits(), we check that the t->chunksectors value is a multiple of the t->physicalblock_size value.

However, by finding the chunksectors value in bytes, we may overflow the unsigned int which holds chunksectors, so change the check to be based on sectors.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39795.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
22ada802ede89829dd010a317d9b812b7df7111a
Fixed
418751910044649baa2b424ea31cce3fc4dcc253
Fixed
8b3ce085b52e674290cbfdd07034e7653ffbe4dc
Fixed
31f2f080898e50cbf2bae62d35f9f2a997547b38
Fixed
3b9d69f0e68aa6b0acd9791c45d445154a8c66e9
Fixed
46aa80ef49594ed7de685ecbc673b291e9a2c159
Fixed
5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2
Fixed
14beeef4aafecc8a41de534e31fb5be94739392f
Fixed
448dfecc7ff807822ecd47a5c052acedca7d09e8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39795.json"