CVE-2026-23245 | Linux Kernel up to 6.18.17/6.19.7/7.0-rc2 call_rcu state issue (EUVD-2026-12808)

VDB-351521 · CVE-2026-23245 · EUVD-2026-12808 LINUX KERNEL UP TO 6.18.17/6.19.7/7.0-RC2 CALL_RCU STATE ISSUE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.3 $0-$5k 0.60 Summaryinfo A vulnerability identified as critical has been detected in Linux Kernel up to 6.18.17/6.19.7/7.0-rc2. Impacted is the function call_rcu. The manipulation leads to state issue. This vulnerability is documented as CVE-2026-23245. There is not any exploit available. You should upgrade the affected component. Detailsinfo A vulnerability was found in Linux Kernel up to 6.18.17/6.19.7/7.0-rc2. It has been rated as critical. This issue affects the function call_rcu. The manipulation with an unknown input leads to a state issue vulnerability. Using CWE to declare the problem leads to CWE-371. The impact remains unknown. The summary by CVE is: In the Linux kernel, the following vulnerability has been resolved: net/sched: act_gate: snapshot parameters with RCU on replace The gate action can be replaced while the hrtimer callback or dump path is walking the schedule list. Convert the parameters to an RCU-protected snapshot and swap updates under tcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits the entry list, preserve the existing schedule so the effective state is unchanged. The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-23245 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 6.18.18, 6.19.8 or 7.0-rc3 eliminates this vulnerability. Applying the patch 04d75529dc0f9be78786162ebab7424af4644df2/58b162e318d0243ad2d7d92456c0873f2494c351/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c 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-2026-12808) and CERT Bund (WID-SEC-2026-0774). Affected Open Source Linux Kernel Productinfo Type Operating System Vendor Linux Name Kernel Version 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 6.18.17 6.19.0 6.19.1 6.19.2 6.19.3 6.19.4 6.19.5 6.19.6 6.19.7 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: 5.5 VulDB Meta Temp Score: 5.3 VulDB Base Score: 5.5 VulDB Temp Score: 5.3 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: State issue CWE: CWE-371 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 6.18.18/6.19.8/7.0-rc3 Patch: 04d75529dc0f9be78786162ebab7424af4644df2/58b162e318d0243ad2d7d92456c0873f2494c351/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c 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-2026-23245 (🔒) GCVE (CVE): GCVE-0-2026-23245 GCVE (VulDB): GCVE-100-351521 EUVD: 🔒 CERT Bund: WID-SEC-2026-0774 - Linux Kernel: Mehrere Schwachstellen Entryinfo Created: 03/18/2026 11:58 Updated: 03/18/2026 16:08 Changes: 03/18/2026 11:58 (58), 03/18/2026 12:24 (1), 03/18/2026 16:08 (7) Complete: 🔍 Cache ID: 99:CCF:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸