CVE-2026-31416 | Linux Kernel up to 6.1.167/6.6.133/6.12.80/6.18.21/6.19.11 Netlink Message nfnetlink_log privilege escalation

VDB-357147 · CVE-2026-31416 · GCVE-0-2026-31416 LINUX KERNEL UP TO 6.1.167/6.6.133/6.12.80/6.18.21/6.19.11 NETLINK MESSAGE NFNETLINK_LOG PRIVILEGE ESCALATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.3 $0-$5k 2.82+ Summaryinfo A vulnerability was found in Linux Kernel up to 6.1.167/6.6.133/6.12.80/6.18.21/6.19.11. It has been rated as critical. Affected is the function nfnetlink_log of the component Netlink Message Handler. Performing a manipulation results in an unknown weakness. This vulnerability is reported as CVE-2026-31416. No exploit exists. Upgrading the affected component is advised. Detailsinfo A vulnerability classified as critical has been found in Linux Kernel up to 6.1.167/6.6.133/6.12.80/6.18.21/6.19.11. This affects the function nfnetlink_log of the component Netlink Message Handler. The impact remains unknown. The summary by CVE is: In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: account for netlink header size This is a followup to an old bug fix: NLMSG_DONE needs to account for the netlink header size, not just the attribute size. This can result in a WARN splat + drop of the netlink message, but other than this there are no ill effects. It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-31416 since 03/09/2026. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/13/2026). Upgrading to version 6.1.168, 6.6.134, 6.12.81, 6.18.22 or 6.19.12 eliminates this vulnerability. Applying the patch 761b45c661af48da6a065868d59ab1e1f64fd9b6/607245c4dbb86d9a10dd8388da0fb82170a99b61/6b419700e459fbf707ca1543b7c1b57a60fedb73/88a8f56e6276f616baad4274c6b8e4683e26e520/f08ffa3e1c8e36b6131f69c5eb23700c28cbd262/6d52a4a0520a6696bdde51caa11f2d6821cd0c01 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 6.1.167 6.6.133 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 6.12.77 6.12.78 6.12.79 6.12.80 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 6.18.18 6.18.19 6.18.20 6.18.21 6.19.0 6.19.1 6.19.2 6.19.3 6.19.4 6.19.5 6.19.6 6.19.7 6.19.8 6.19.9 6.19.10 6.19.11 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: Privilege escalation CWE: Unknown 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 6.1.168/6.6.134/6.12.81/6.18.22/6.19.12 Patch: 761b45c661af48da6a065868d59ab1e1f64fd9b6/607245c4dbb86d9a10dd8388da0fb82170a99b61/6b419700e459fbf707ca1543b7c1b57a60fedb73/88a8f56e6276f616baad4274c6b8e4683e26e520/f08ffa3e1c8e36b6131f69c5eb23700c28cbd262/6d52a4a0520a6696bdde51caa11f2d6821cd0c01 Timelineinfo 03/09/2026 CVE reserved 04/13/2026 +34 days Advisory disclosed 04/13/2026 +0 days VulDB entry created 04/13/2026 +0 days VulDB entry last update Sourcesinfo Vendor: kernel.org Advisory: git.kernel.org Status: Confirmed CVE: CVE-2026-31416 (🔒) GCVE (CVE): GCVE-0-2026-31416 GCVE (VulDB): GCVE-100-357147 Entryinfo Created: 04/13/2026 16:03 Changes: 04/13/2026 16:03 (58) Complete: 🔍 Cache ID: 99:FE6:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸