7.8

CVE-2026-46163: linux Improper Validation of Array Index

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2026-46163DEBIAN-CVE-2026-46163
Published 28-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46163 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: b43legacy: enforce bounds check on firmware key index in RX path Same fix as b43: the firmware-controlled key index in b43legacy_rx() can exceed dev->max_nr_keys. The existing B43legacy_WARN_ON is non-enforcing in production builds, allowing an out-of-bounds read of dev->key[]. Make the check enforcing by dropping the frame for invalid indices.

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≥ 75388acd0cd827dc1498043daa7d1c760902cd67, < a92bd0503df2488f2cc040f329ebccff1c1934cb | ≥ 75388acd0cd827dc1498043daa7d1c760902cd67, < df805c1d085b7a96077f0964185764c87060950d | ≥ 75388acd0cd827dc1498043daa7d1c760902cd67, < 4242db36de99de734cc1f60e5edd86cda7e598c6 | ≥ 75388acd0cd827dc1498043daa7d1c760902cd67, < 1baaeb6adecb9691748c0253dab6ddd19a2b4e9e | ≥ 75388acd0cd827dc1498043daa7d1c760902cd67, < 6ee946077607d7783ae6709a899213fc4fe08f35 | ≥ 75388acd0cd827dc1498043daa7d1c760902cd67, < 9d1bc155802943e92c57a5fb923d23edfbf0b525 | ≥ 75388acd0cd827dc1498043daa7d1c760902cd67, < fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5 | ≥ 75388acd0cd827dc1498043daa7d1c760902cd67, < a035766f970bde2d4298346a31a80685be5c0205 | 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