Bug 2482610 (CVE-2026-46161) - CVE-2026-46161 kernel: md/raid10: fix divide-by-zero in setup_geo() with zero far_copies
Summary: CVE-2026-46161 kernel: md/raid10: fix divide-by-zero in setup_geo() with zero...
Keywords:
Status: NEW
Alias: CVE-2026-46161
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-28 11:05 UTC by OSIDB Bzimport
Modified: 2026-05-28 15:43 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-05-28 11:05:42 UTC 
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.
Comment 1 Keith Grant 2026-05-28 15:42:08 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052824-CVE-2026-46161-b5c5@gregkh/T
Note You need to log in before you can comment on or make changes to this bug.