CVE-2026-23285 | Linux Kernel up to 6.6.129/6.12.76/6.18.16/6.19.6/7.0-rc1 drbd drbd_request_endio null pointer dereference

VDB-353005 · CVE-2026-23285 · GCVE-0-2026-23285 LINUX KERNEL UP TO 6.6.129/6.12.76/6.18.16/6.19.6/7.0-RC1 DRBD DRBD_REQUEST_ENDIO NULL POINTER DEREFERENCE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.5 $0-$5k 2.83+ Summaryinfo A vulnerability identified as critical has been detected in Linux Kernel up to 6.6.129/6.12.76/6.18.16/6.19.6/7.0-rc1. This issue affects the function drbd_request_endio of the component drbd. This manipulation causes null pointer dereference. This vulnerability is registered as CVE-2026-23285. No exploit is available. You should upgrade the affected component. Detailsinfo A vulnerability was found in Linux Kernel up to 6.6.129/6.12.76/6.18.16/6.19.6/7.0-rc1. It has been declared as critical. Affected by this vulnerability is the function drbd_request_endio of the component drbd. 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: drbd: fix null-pointer dereference on local read error In drbd_request_endio(), READ_COMPLETED_WITH_ERROR is passed to __req_mod() with a NULL peer_device: __req_mod(req, what, NULL, &m); The READ_COMPLETED_WITH_ERROR handler then unconditionally passes this NULL peer_device to drbd_set_out_of_sync(), which dereferences it, causing a null-pointer dereference. Fix this by obtaining the peer_device via first_peer_device(device), matching how drbd_req_destroy() handles the same situation. The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-23285 since 01/13/2026. The exploitation appears to be easy. Technical details are known, but no exploit is available. Upgrading to version 6.6.130, 6.12.77, 6.18.17, 6.19.7 or 7.0-rc2 eliminates this vulnerability. Applying the patch 6f1d1614f841d91a4169db65812ffd1271735b42/1e906c08594c8f9a6a524f38ede2c4e051196106/4e8935053ba389ae8d6685c10854d8021931bd89/91df51d2df0ca4fd3281f73626341563d64a98a5/0d195d3b205ca90db30d70d09d7bb6909aac178f 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 6.6.129 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 6.18.0 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: 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 6.6.130/6.12.77/6.18.17/6.19.7/7.0-rc2 Patch: 6f1d1614f841d91a4169db65812ffd1271735b42/1e906c08594c8f9a6a524f38ede2c4e051196106/4e8935053ba389ae8d6685c10854d8021931bd89/91df51d2df0ca4fd3281f73626341563d64a98a5/0d195d3b205ca90db30d70d09d7bb6909aac178f Timelineinfo 01/13/2026 CVE reserved 03/25/2026 +71 days Advisory disclosed 03/25/2026 +0 days VulDB entry created 03/25/2026 +0 days VulDB entry last update Sourcesinfo Vendor: kernel.org Advisory: git.kernel.org Status: Confirmed CVE: CVE-2026-23285 (🔒) GCVE (CVE): GCVE-0-2026-23285 GCVE (VulDB): GCVE-100-353005 Entryinfo Created: 03/25/2026 12:08 Changes: 03/25/2026 12:08 (59) Complete: 🔍 Cache ID: 99:AE8:101 Discussion No comments yet. 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