7.8

CVE-2026-46136: linux Out-of-bounds Write

CVSS: 7.8v3.1HighUndergoing analysis
AliasesUBUNTU-CVE-2026-46136DEBIAN-CVE-2026-46136
Published 28-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46136 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.6% 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 38 · Related 38
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: mt76: mt7921: fix a potential clc buffer length underflow The buf_len is used to limit the iterations for retrieving the country power setting and may underflow under certain conditions due to changes in the power table in CLC. This underflow leads to an almost infinite loop or an invalid power setting resulting in driver initialization failure.

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

Ubuntu139 products
  • linux< 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0c9318d49e501a5d50b02bd91a4813bde2353488, < 2a79b1a492bcfa725383b6580cd93a6862308c85 | ≥ 15173a1697236793e9e900b82fece6f99d41b2a7, < e451c325b000b9a0081fd93bc6d103d6943d4b55 | ≥ fa6ad88e023ddfa6c5dcdb466d159e89f451e305, < 90cc573fd2f46ddbc2c329e7814b5ba3deb7b939 | ≥ fa6ad88e023ddfa6c5dcdb466d159e89f451e305, < 0aa63d33742b805d1a218d18d12b983cce4b2f7b | ≥ fa6ad88e023ddfa6c5dcdb466d159e89f451e305, < a0111847f0b4f6023f6dd320114697514e024ba3 | ≥ fa6ad88e023ddfa6c5dcdb466d159e89f451e305, < 5373f8b19e568b5c217832b9bbef165bd2b2df14 | 5c8cac512844ad593d31258e215908014381bee2 | ≥ 6.1.75, < 6.1.175 | ≥ 6.6.14, < 6.6.140 | ≥ 6.7.2, < 6.8 | 6.8
  • linux_kernel≥ 6.1.75, < 6.1.175 | ≥ 6.6.14, < 6.6.140 | ≥ 6.7.2, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7
Debian1 product
  • linux< 6.1.176-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 142 products

References

37 links
Show all 37 references