CVE-2026-46161
MEDIUM severity · CVSS 5.5 · CWE-369
5.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/0b43a70394ce492274e67463326be03e0a9897c5 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/0b43a70394ce492274e67463326be03e0a9897c5Patch
- https://git.kernel.org/stable/c/4af2e558e6fdfb972c61350653fd55d1f62b60a5Patch
- https://git.kernel.org/stable/c/553e32adfa1a96b217651139a3f8c3b92b9984acPatch
- https://git.kernel.org/stable/c/913d556e4bd1b56ed822815655b82c7bb54edc51Patch
- https://git.kernel.org/stable/c/9aa6d860b0930e2f72795665c42c44252a558a0cPatch
- https://git.kernel.org/stable/c/9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cdaPatch
- https://git.kernel.org/stable/c/c716ab3034f84f8a6c226814247b8c5ac9f95da1Patch
- https://git.kernel.org/stable/c/f9ddb621b2325eb69c95692958daf2bab4dea2c4Patch