md/raid10: fix divide-by-zero in setup_geo() with zero far_copies
Summary
| CVE | CVE-2026-46161 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-28 10:16:31 UTC |
| Updated | 2026-06-01 17:17:29 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.000180000 probability, percentile 0.050770000 (date 2026-06-01)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 475901aff15841fb0a81e7546517407779a9b061 0b43a70394ce492274e67463326be03e0a9897c5 git | Not specified |
| CNA | Linux | Linux | affected 475901aff15841fb0a81e7546517407779a9b061 c716ab3034f84f8a6c226814247b8c5ac9f95da1 git | Not specified |
| CNA | Linux | Linux | affected 475901aff15841fb0a81e7546517407779a9b061 553e32adfa1a96b217651139a3f8c3b92b9984ac git | Not specified |
| CNA | Linux | Linux | affected 475901aff15841fb0a81e7546517407779a9b061 4af2e558e6fdfb972c61350653fd55d1f62b60a5 git | Not specified |
| CNA | Linux | Linux | affected 475901aff15841fb0a81e7546517407779a9b061 9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cda git | Not specified |
| CNA | Linux | Linux | affected 475901aff15841fb0a81e7546517407779a9b061 913d556e4bd1b56ed822815655b82c7bb54edc51 git | Not specified |
| CNA | Linux | Linux | affected 475901aff15841fb0a81e7546517407779a9b061 f9ddb621b2325eb69c95692958daf2bab4dea2c4 git | Not specified |
| CNA | Linux | Linux | affected 475901aff15841fb0a81e7546517407779a9b061 9aa6d860b0930e2f72795665c42c44252a558a0c git | Not specified |
| CNA | Linux | Linux | affected 3.9 | Not specified |
| CNA | Linux | Linux | unaffected 3.9 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.140 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.88 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.30 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.7 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1-rc2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/913d556e4bd1b56ed822815655b82c7bb54edc51 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0b43a70394ce492274e67463326be03e0a9897c5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9aa6d860b0930e2f72795665c42c44252a558a0c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cda | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/553e32adfa1a96b217651139a3f8c3b92b9984ac | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4af2e558e6fdfb972c61350653fd55d1f62b60a5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f9ddb621b2325eb69c95692958daf2bab4dea2c4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c716ab3034f84f8a6c226814247b8c5ac9f95da1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.