CVE-2026-23475 | Linux Kernel up to 7.0-rc4 spi null pointer dereference

VDB-355165 · CVE-2026-23475 · GCVE-0-2026-23475 LINUX KERNEL UP TO 7.0-RC4 SPI NULL POINTER DEREFERENCE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.5 $0-$5k 0.84 Summaryinfo A vulnerability classified as critical has been found in Linux Kernel up to 7.0-rc4. This affects an unknown function of the component spi. This manipulation causes null pointer dereference. This vulnerability is registered as CVE-2026-23475. No exploit is available. It is recommended to upgrade the affected component. Detailsinfo A vulnerability was found in Linux Kernel up to 7.0-rc4. It has been declared as critical. Affected by this vulnerability is some unknown processing of the component spi. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is: In the Linux kernel, the following vulnerability has been resolved: spi: fix statistics allocation The controller per-cpu statistics is not allocated until after the controller has been registered with driver core, which leaves a window where accessing the sysfs attributes can trigger a NULL-pointer dereference. Fix this by moving the statistics allocation to controller allocation while tying its lifetime to that of the controller (rather than using implicit devres). The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-23475 since 01/13/2026. Neither technical details nor an exploit are publicly available. Upgrading to version 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10 or 7.0-rc5 eliminates this vulnerability. Applying the patch 80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4e/f13100b1f5f111989f0750540a795fdef47492af/df30056c78e8bead02d4be020199cabdbec0fef1/378b295f67102eef78cf2c28105f60ae1dab5cc1/118ce777d39f03cac99231196f820e4f998613a8/dee0774bbb2abb172e9069ce5ffef579b12b3ae9 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 6.12.77 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 6.19.0 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 7.0-rc1 7.0-rc2 7.0-rc3 7.0-rc4 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: Null pointer dereference CWE: CWE-476 / 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 6.1.167/6.6.130/6.12.78/6.18.20/6.19.10/7.0-rc5 Patch: 80c5bd0dca1cc5526ae0f4b273ccd163ed4caa4e/f13100b1f5f111989f0750540a795fdef47492af/df30056c78e8bead02d4be020199cabdbec0fef1/378b295f67102eef78cf2c28105f60ae1dab5cc1/118ce777d39f03cac99231196f820e4f998613a8/dee0774bbb2abb172e9069ce5ffef579b12b3ae9 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-2026-23475 (🔒) GCVE (CVE): GCVE-0-2026-23475 GCVE (VulDB): GCVE-100-355165 Entryinfo Created: 04/03/2026 18:17 Changes: 04/03/2026 18:17 (58) Complete: 🔍 Cache ID: 99:5E7:101 Discussion No comments yet. 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