8.8

CVE-2026-43172: linux Improper Validation of Array Index

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2026-43172DEBIAN-CVE-2026-43172CGA-3jrf-9m3q-6h64
Published 06-05-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-43172 is a high (CVSS 8.8) Improper Validation of Array Index vulnerability in linux. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.38%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 13
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1SUSE-SU-2026:23221-1

Timeline

  1. 06-05-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: fix 22000 series SMEM parsing If the firmware were to report three LMACs (which doesn't exist in hardware) then using "fwrt->smem_cfg.lmac[2]" is an overrun of the array. Reject such and use IWL_FW_CHECK instead of WARN_ON in this function.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

+0.12 pp

From 0.26% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.38%

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

Ubuntu147 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard5 products
  • linux-aws-6.12All versions (No fix recorded)
  • linux-azure-6.12All versions (No fix recorded)
  • linux-gcp-6.12All versions (No fix recorded)
  • linux-qemu-6.12All versions (No fix recorded)
  • linux-vmware-6.12All versions (No fix recorded)
Linux2 products
  • linux≥ ebfa7f8ae155c9a0bb2e4038d6b5d8b14881c424, < 5cc021586420c5e13acc65da5bf73edd451e2c3e | ≥ ebfa7f8ae155c9a0bb2e4038d6b5d8b14881c424, < b23c7cd616a6a113363be707b7b9e4bc41b18a07 | ≥ ebfa7f8ae155c9a0bb2e4038d6b5d8b14881c424, < 1d49a42717bdc8de77eabeb5b7d3e88d141ffea9 | ≥ ebfa7f8ae155c9a0bb2e4038d6b5d8b14881c424, < 2b4b1510aaaf5b9fb57327ecffc20c055f61f205 | ≥ ebfa7f8ae155c9a0bb2e4038d6b5d8b14881c424, < 58192b9ce09b0f0f86e2036683bd542130b91a98 | 5.8
  • linux_kernel≥ 5.8, < 6.18.16 | ≥ 6.19, < 6.19.6
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.19.6-1

4 vendors · 155 products

References

13 links
Show all 13 references