7.8

CVE-2026-46122: linux Improper Validation of Array Index

CVSS: 7.8v3.1HighUndergoing analysis
AliasesUBUNTU-CVE-2026-46122DEBIAN-CVE-2026-46122
Published 28-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46122 is a high (CVSS 7.8) Improper Validation of Array Index vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.18%
0%100%
Low · +0.05 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-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1

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: wifi: b43: enforce bounds check on firmware key index in b43_rx() The firmware-controlled key index in b43_rx() can exceed the dev->key[] array size (58 entries). The existing B43_WARN_ON is non-enforcing in production builds, allowing an out-of-bounds read. Make the B43_WARN_ON check enforcing by dropping the frame when the firmware returns an invalid key index.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

+0.05 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.18%

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≥ e4d6b7951812d98417feb10784e400e253caf633, < 135cb49c9a42a02cceeac7b49ec03e267f7ed6d6 | ≥ e4d6b7951812d98417feb10784e400e253caf633, < 3157ad40b084a8f3932da2641749ab45e99b933e | ≥ e4d6b7951812d98417feb10784e400e253caf633, < 765709720e6af9a178abc40244a8d1aa39ac4e71 | ≥ e4d6b7951812d98417feb10784e400e253caf633, < c3d7b90dc95020cd9282c4630e402fe224f7644e | ≥ e4d6b7951812d98417feb10784e400e253caf633, < 1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14 | ≥ e4d6b7951812d98417feb10784e400e253caf633, < d7029879bafdac2006c67553807d122283dc6cbf | ≥ e4d6b7951812d98417feb10784e400e253caf633, < 219ba67e69e49681e48c822d6eaafb5def032f34 | ≥ e4d6b7951812d98417feb10784e400e253caf633, < 1f4f78bf8549e6ac4f04fba4176854f3a6e0c332 | 2.6.24
  • linux_kernel≥ 2.6.24, < 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 | 7.1:rc1 | 7.1:rc2
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