5.5

CVE-2026-46161: linux Divide By Zero

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-46161DEBIAN-CVE-2026-46161
Published 28-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46161 is a medium (CVSS 5.5) Divide By Zero vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.4% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.17%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 51 · Related 51
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22742-1SUSE-SU-2026:22769-1SUSE-SU-2026:22809-1SUSE-SU-2026:22810-1

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.04 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu166 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 475901aff15841fb0a81e7546517407779a9b061, < 0b43a70394ce492274e67463326be03e0a9897c5 | ≥ 475901aff15841fb0a81e7546517407779a9b061, < c716ab3034f84f8a6c226814247b8c5ac9f95da1 | ≥ 475901aff15841fb0a81e7546517407779a9b061, < 553e32adfa1a96b217651139a3f8c3b92b9984ac | ≥ 475901aff15841fb0a81e7546517407779a9b061, < 4af2e558e6fdfb972c61350653fd55d1f62b60a5 | ≥ 475901aff15841fb0a81e7546517407779a9b061, < 9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cda | ≥ 475901aff15841fb0a81e7546517407779a9b061, < 913d556e4bd1b56ed822815655b82c7bb54edc51 | ≥ 475901aff15841fb0a81e7546517407779a9b061, < f9ddb621b2325eb69c95692958daf2bab4dea2c4 | ≥ 475901aff15841fb0a81e7546517407779a9b061, < 9aa6d860b0930e2f72795665c42c44252a558a0c | 3.9
  • linux_kernel≥ 3.9.1, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 3.9 | 3.9:rc2 | 3.9:rc3 | 3.9:rc4 | 3.9:rc5 | 3.9:rc6 | 3.9:rc7 | 3.9:rc8 | 7.1:rc1
Debian1 product
  • linux< 6.1.176-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 169 products

References

52 links
Show all 52 references