CVE-2026-23246 | Linux Kernel up to 6.12.76/6.18.16/6.19.6/7.0-rc1 wifi ieee80211_ml_reconfiguration link_id out-of-bounds (EUVD-2026-12809)

VDB-351525 · CVE-2026-23246 · EUVD-2026-12809 LINUX KERNEL UP TO 6.12.76/6.18.16/6.19.6/7.0-RC1 WIFI IEEE80211_ML_RECONFIGURATION LINK_ID OUT-OF-BOUNDS HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.4 $0-$5k 0.60 Summaryinfo A vulnerability classified as critical has been found in Linux Kernel up to 6.12.76/6.18.16/6.19.6/7.0-rc1. This impacts the function ieee80211_ml_reconfiguration of the component wifi. Performing a manipulation of the argument link_id results in out-of-bounds. This vulnerability is known as CVE-2026-23246. No exploit is available. It is recommended to upgrade the affected component. Detailsinfo A vulnerability, which was classified as problematic, was found in Linux Kernel up to 6.12.76/6.18.16/6.19.6/7.0-rc1. This affects the function ieee80211_ml_reconfiguration of the component wifi. The manipulation of the argument link_id with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality. The summary by CVE is: In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration link_id is taken from the ML Reconfiguration element (control & 0x000f), so it can be 0..15. link_removal_timeout[] has IEEE80211_MLD_MAX_NUM_LINKS (15) elements, so index 15 is out-of-bounds. Skip subelements with link_id >= IEEE80211_MLD_MAX_NUM_LINKS to avoid a stack out-of-bounds write. The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-23246 since 01/13/2026. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/18/2026). Upgrading to version 6.12.77, 6.18.17, 6.19.7 or 7.0-rc2 eliminates this vulnerability. Applying the patch bfde158d5d1322c0c2df398a8d1ccce04943be2e/f35ceec54d48e227fa46f8f97fd100a77b8eab15/d58d71c2167601762351962b9604808d3be94400/162d331d833dc73a3e905a24c44dd33732af1fc5 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. The vulnerability is also documented in the databases at EUVD (EUVD-2026-12809) and CERT Bund (WID-SEC-2026-0774). Affected Open Source Linux Kernel Productinfo Type Operating System Vendor Linux Name Kernel Version 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 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: 3.5 VulDB Meta Temp Score: 3.4 VulDB Base Score: 3.5 VulDB Temp Score: 3.4 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: Out-of-bounds CWE: CWE-125 / CWE-119 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 6.12.77/6.18.17/6.19.7/7.0-rc2 Patch: bfde158d5d1322c0c2df398a8d1ccce04943be2e/f35ceec54d48e227fa46f8f97fd100a77b8eab15/d58d71c2167601762351962b9604808d3be94400/162d331d833dc73a3e905a24c44dd33732af1fc5 Timelineinfo 01/13/2026 CVE reserved 03/18/2026 +64 days Advisory disclosed 03/18/2026 +0 days VulDB entry created 03/18/2026 +0 days VulDB entry last update Sourcesinfo Vendor: kernel.org Advisory: git.kernel.org Status: Confirmed CVE: CVE-2026-23246 (🔒) GCVE (CVE): GCVE-0-2026-23246 GCVE (VulDB): GCVE-100-351525 EUVD: 🔒 CERT Bund: WID-SEC-2026-0774 - Linux Kernel: Mehrere Schwachstellen Entryinfo Created: 03/18/2026 12:00 Updated: 03/18/2026 16:08 Changes: 03/18/2026 12:00 (60), 03/18/2026 12:24 (1), 03/18/2026 16:08 (7) Complete: 🔍 Cache ID: 99:6F8:101 Discussion No comments yet. 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