block: avoid possible overflow for chunk_sectors check in blk_stack_limits()
In the Linux kernel, the following vulnerability has been resolved: block: avoid possible overflow for chunk_sectors check in blk_stack_limits() In blk_stack_limits(), we check that the t->chunk_sectors value is a multiple of the t->physical_block_size value. However, by finding the chunk_sectors value in bytes, we may overflow the unsigned int which holds chunk_sectors, so change the check to be based on sectors.
CVE-2025-39795
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-39795
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "22ada802ede89829dd010a317d9b812b7df7111a",
"lessThan": "418751910044649baa2b424ea31cce3fc4dcc253",
"versionType": "git"
},
{
"status": "affected",
"version": "22ada802ede89829dd010a317d9b812b7df7111a",
"lessThan": "8b3ce085b52e674290cbfdd07034e7653ffbe4dc",
"versionType": "git"
},
{
"status": "affected",
"version": "22ada802ede89829dd010a317d9b812b7df7111a",
"lessThan": "31f2f080898e50cbf2bae62d35f9f2a997547b38",
"versionType": "git"
},
{
"status": "affected",
"version": "22ada802ede89829dd010a317d9b812b7df7111a",
"lessThan": "3b9d69f0e68aa6b0acd9791c45d445154a8c66e9",
"versionType": "git"
},
{
"status": "affected",
"version": "22ada802ede89829dd010a317d9b812b7df7111a",
"lessThan": "46aa80ef49594ed7de685ecbc673b291e9a2c159",
"versionType": "git"
},
{
"status": "affected",
"version": "22ada802ede89829dd010a317d9b812b7df7111a",
"lessThan": "5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2",
"versionType": "git"
},
{
"status": "affected",
"version": "22ada802ede89829dd010a317d9b812b7df7111a",
"lessThan": "14beeef4aafecc8a41de534e31fb5be94739392f",
"versionType": "git"
},
{
"status": "affected",
"version": "22ada802ede89829dd010a317d9b812b7df7111a",
"lessThan": "448dfecc7ff807822ecd47a5c052acedca7d09e8",
"versionType": "git"
}
],
"programFiles": [
"block/blk-settings.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.241",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.190",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.149",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.43",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.11",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16.2",
"versionType": "semver",
"lessThanOrEqual": "6.16.*"
},
{
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"block/blk-settings.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-39795
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27069 · Revision 1
- Added to Heist Feed
- Publisher date