CVE-2026-46136wifi: mt76: mt7921: fix a potential clc buffer length underflow
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Undergoing Analysis
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0c9318d49e501a5d50b02bd91a4813bde2353488 before 2a79b1a492bcfa725383b6580cd93a6862308c85; from 15173a1697236793e9e900b82fece6f99d41b2a7 before e451c325b000b9a0081fd93bc6d103d6943d4b55; from fa6ad88e023ddfa6c5dcdb466d159e89f451e305 before 90cc573fd2f46ddbc2c329e7814b5ba3deb7b939; from fa6ad88e023ddfa6c5dcdb466d159e89f451e305 before 0aa63d33742b805d1a218d18d12b983cce4b2f7b; from fa6ad88e023ddfa6c5dcdb466d159e89f451e305 before a0111847f0b4f6023f6dd320114697514e024ba3; from fa6ad88e023ddfa6c5dcdb466d159e89f451e305 before 5373f8b19e568b5c217832b9bbef165bd2b2df14; 5c8cac512844ad593d31258e215908014381bee2; from 6.1.75 before 6.1.175; and 2 more ranges | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
linux linux_kernel linux:linux_kernel | from 6.1.75 before 6.1.175; from 6.6.14 before 6.6.140; from 6.7.2 before 6.12.88; from 6.13 before 6.18.30; from 6.19 before 7.0.7 | NVD |
References
- https://git.kernel.org/stable/c/2a79b1a492bcfa725383b6580cd93a6862308c85patch
- https://git.kernel.org/stable/c/e451c325b000b9a0081fd93bc6d103d6943d4b55patch
- https://git.kernel.org/stable/c/90cc573fd2f46ddbc2c329e7814b5ba3deb7b939patch
- https://git.kernel.org/stable/c/0aa63d33742b805d1a218d18d12b983cce4b2f7bpatch
- https://git.kernel.org/stable/c/a0111847f0b4f6023f6dd320114697514e024ba3patch
- https://git.kernel.org/stable/c/5373f8b19e568b5c217832b9bbef165bd2b2df14patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.