md/raid10: fix divide-by-zero in setup_geo() with zero far_copies
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix divide-by-zero in setup_geo() with zero far_copies setup_geo() extracts near_copies (nc) and far_copies (fc) from the user-provided layout parameter without checking for zero. When fc=0 with the "improved" far set layout selected, 'geo->far_set_size = disks / fc' triggers a divide-by-zero. Validate nc and fc immediately after extraction, returning -1 if either is zero.
CVE-2026-46161
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-2026-46161
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": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "0b43a70394ce492274e67463326be03e0a9897c5",
"versionType": "git"
},
{
"status": "affected",
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "c716ab3034f84f8a6c226814247b8c5ac9f95da1",
"versionType": "git"
},
{
"status": "affected",
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "553e32adfa1a96b217651139a3f8c3b92b9984ac",
"versionType": "git"
},
{
"status": "affected",
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "4af2e558e6fdfb972c61350653fd55d1f62b60a5",
"versionType": "git"
},
{
"status": "affected",
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cda",
"versionType": "git"
},
{
"status": "affected",
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "913d556e4bd1b56ed822815655b82c7bb54edc51",
"versionType": "git"
},
{
"status": "affected",
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "f9ddb621b2325eb69c95692958daf2bab4dea2c4",
"versionType": "git"
},
{
"status": "affected",
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "9aa6d860b0930e2f72795665c42c44252a558a0c",
"versionType": "git"
}
],
"programFiles": [
"drivers/md/raid10.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.258",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.88",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.30",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.7",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/md/raid10.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46161
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28398 · Revision 1
- Added to Heist Feed
- Publisher date