CVE-2026-23285

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23285
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0d195d3b205ca90db30d70d09d7bb6909aac178f Patch
https://git.kernel.org/stable/c/1e906c08594c8f9a6a524f38ede2c4e051196106 Patch
https://git.kernel.org/stable/c/4e8935053ba389ae8d6685c10854d8021931bd89 Patch
https://git.kernel.org/stable/c/6f1d1614f841d91a4169db65812ffd1271735b42 Patch
https://git.kernel.org/stable/c/91df51d2df0ca4fd3281f73626341563d64a98a5 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
History

22 May 2026, 00:12

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
CWE CWE-476
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: drbd: corrección de desreferencia de puntero nulo en error de lectura local En drbd_request_endio(), READ_COMPLETED_WITH_ERROR se pasa a __req_mod() con un peer_device NULO: __req_mod(req, what, NULL, &m); El gestor de READ_COMPLETED_WITH_ERROR luego pasa incondicionalmente este peer_device NULO a drbd_set_out_of_sync(), que lo desreferencia, causando una desreferencia de puntero nulo. Esto se corrige obteniendo el peer_device a través de first_peer_device(device), coincidiendo con cómo drbd_req_destroy() maneja la misma situación.
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/0d195d3b205ca90db30d70d09d7bb6909aac178f - () https://git.kernel.org/stable/c/0d195d3b205ca90db30d70d09d7bb6909aac178f - Patch
References () https://git.kernel.org/stable/c/1e906c08594c8f9a6a524f38ede2c4e051196106 - () https://git.kernel.org/stable/c/1e906c08594c8f9a6a524f38ede2c4e051196106 - Patch
References () https://git.kernel.org/stable/c/4e8935053ba389ae8d6685c10854d8021931bd89 - () https://git.kernel.org/stable/c/4e8935053ba389ae8d6685c10854d8021931bd89 - Patch
References () https://git.kernel.org/stable/c/6f1d1614f841d91a4169db65812ffd1271735b42 - () https://git.kernel.org/stable/c/6f1d1614f841d91a4169db65812ffd1271735b42 - Patch
References () https://git.kernel.org/stable/c/91df51d2df0ca4fd3281f73626341563d64a98a5 - () https://git.kernel.org/stable/c/91df51d2df0ca4fd3281f73626341563d64a98a5 - Patch

25 Mar 2026, 11:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-25 11:16

Updated : 2026-05-22 00:12

NVD link : CVE-2026-23285

Mitre link : CVE-2026-23285

CVE.ORG link : CVE-2026-23285

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference