CVE-2026-23420 | Linux Kernel up to 7.0-rc2 wifi denial of service

VDB-355095 · CVE-2026-23420 · GCVE-0-2026-23420 LINUX KERNEL UP TO 7.0-RC2 WIFI DENIAL OF SERVICE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.5 $0-$5k 0.64+ Summaryinfo A vulnerability classified as critical has been found in Linux Kernel up to 7.0-rc2. This issue affects some unknown processing of the component wifi. Performing a manipulation results in denial of service. This vulnerability is known as CVE-2026-23420. No exploit is available. It is recommended to upgrade the affected component. Detailsinfo A vulnerability classified as critical has been found in Linux Kernel up to 7.0-rc2. This affects some unknown processing of the component wifi. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is: In the Linux kernel, the following vulnerability has been resolved: wifi: wlcore: Fix a locking bug Make sure that wl->mutex is locked before it is unlocked. This has been detected by the Clang thread-safety analyzer. It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-23420 since 01/13/2026. The technical details are unknown and an exploit is not publicly available. Upgrading to version 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7 or 7.0-rc3 eliminates this vulnerability. Applying the patch 7ab511003c5ae3bf5364d7699a2e3ab1db513680/aca4c9e4901b01b8b985993dc7df80bd1d1338bd/5feeea59ed142e15c3284d0b1a364c6786bf3487/fcef983ad88832f3aa83491a174c345de57afbbd/1a1c28a08d74716f3f8e3a21c86b30d0ff13521a/72c6df8f284b3a49812ce2ac136727ace70acc7c is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Type Operating System Vendor Linux Name Kernel Version 6.1.166 6.6.129 6.12.0 6.12.1 6.12.2 6.12.3 6.12.4 6.12.5 6.12.6 6.12.7 6.12.8 6.12.9 6.12.10 6.12.11 6.12.12 6.12.13 6.12.14 6.12.15 6.12.16 6.12.17 6.12.18 6.12.19 6.12.20 6.12.21 6.12.22 6.12.23 6.12.24 6.12.25 6.12.26 6.12.27 6.12.28 6.12.29 6.12.30 6.12.31 6.12.32 6.12.33 6.12.34 6.12.35 6.12.36 6.12.37 6.12.38 6.12.39 6.12.40 6.12.41 6.12.42 6.12.43 6.12.44 6.12.45 6.12.46 6.12.47 6.12.48 6.12.49 6.12.50 6.12.51 6.12.52 6.12.53 6.12.54 6.12.55 6.12.56 6.12.57 6.12.58 6.12.59 6.12.60 6.12.61 6.12.62 6.12.63 6.12.64 6.12.65 6.12.66 6.12.67 6.12.68 6.12.69 6.12.70 6.12.71 6.12.72 6.12.73 6.12.74 6.12.75 6.12.76 6.18.0 6.18.1 6.18.2 6.18.3 6.18.4 6.18.5 6.18.6 6.18.7 6.18.8 6.18.9 6.18.10 6.18.11 6.18.12 6.18.13 6.18.14 6.18.15 6.18.16 6.19.0 6.19.1 6.19.2 6.19.3 6.19.4 6.19.5 6.19.6 7.0-rc1 7.0-rc2 License open-source Website Vendor: https://www.kernel.org/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.7 VulDB Meta Temp Score: 5.5 VulDB Base Score: 5.7 VulDB Temp Score: 5.5 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Denial of service CWE: CWE-404 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Partially Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Kernel 6.1.167/6.6.130/6.12.77/6.18.17/6.19.7/7.0-rc3 Patch: 7ab511003c5ae3bf5364d7699a2e3ab1db513680/aca4c9e4901b01b8b985993dc7df80bd1d1338bd/5feeea59ed142e15c3284d0b1a364c6786bf3487/fcef983ad88832f3aa83491a174c345de57afbbd/1a1c28a08d74716f3f8e3a21c86b30d0ff13521a/72c6df8f284b3a49812ce2ac136727ace70acc7c Timelineinfo 01/13/2026 CVE reserved 04/03/2026 +79 days Advisory disclosed 04/03/2026 +0 days VulDB entry created 04/03/2026 +0 days VulDB entry last update Sourcesinfo Vendor: kernel.org Advisory: git.kernel.org Status: Confirmed CVE: CVE-2026-23420 (🔒) GCVE (CVE): GCVE-0-2026-23420 GCVE (VulDB): GCVE-100-355095 Entryinfo Created: 04/03/2026 17:03 Changes: 04/03/2026 17:03 (58) Complete: 🔍 Cache ID: 99:809:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸