CVE-2026-31559 | Linux Kernel up to 6.12.79/6.18.20/6.19.10 LoongArch kstrdup allocation of resources

VDB-359373 · CVE-2026-31559 · GCVE-0-2026-31559 LINUX KERNEL UP TO 6.12.79/6.18.20/6.19.10 LOONGARCH KSTRDUP ALLOCATION OF RESOURCES HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.5 $0-$5k 0.00+ Summaryinfo A vulnerability was found in Linux Kernel up to 6.12.79/6.18.20/6.19.10. It has been rated as critical. This vulnerability affects the function kstrdup of the component LoongArch. Performing a manipulation results in allocation of resources. This vulnerability was named CVE-2026-31559. There is no available exploit. Upgrading the affected component is advised. Detailsinfo A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.12.79/6.18.20/6.19.10. This affects the function kstrdup of the component LoongArch. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. This is going to have an impact on availability. The summary by CVE is: In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix missing NULL checks for kstrdup() 1. Replace "of_find_node_by_path("/")" with "of_root" to avoid multiple calls to "of_node_put()". 2. Fix a potential kernel oops during early boot when memory allocation fails while parsing CPU model from device tree. The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-31559 since 03/09/2026. Technical details are known, but no exploit is available. Upgrading to version 6.12.80, 6.18.21 or 6.19.11 eliminates this vulnerability. Applying the patch 5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0/a1da957c25cf751a2dce8fb7777f82ccbac0cb3e/b61a309743322fb57fb9afa9aa3495ac758e4f5e/3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1 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 6.12.0 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 6.18.0 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 6.19.0 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 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: Allocation of resources CWE: CWE-770 / CWE-400 / 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 6.12.80/6.18.21/6.19.11 Patch: 5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0/a1da957c25cf751a2dce8fb7777f82ccbac0cb3e/b61a309743322fb57fb9afa9aa3495ac758e4f5e/3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1 Timelineinfo 03/09/2026 CVE reserved 04/24/2026 +45 days Advisory disclosed 04/24/2026 +0 days VulDB entry created 04/24/2026 +0 days VulDB entry last update Sourcesinfo Vendor: kernel.org Advisory: git.kernel.org Status: Confirmed CVE: CVE-2026-31559 (🔒) GCVE (CVE): GCVE-0-2026-31559 GCVE (VulDB): GCVE-100-359373 Entryinfo Created: 04/24/2026 17:43 Changes: 04/24/2026 17:43 (59) Complete: 🔍 Cache ID: 99:739:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸