CVE-2026-23298

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23298
In the Linux kernel, the following vulnerability has been resolved: can: ucan: Fix infinite loop from zero-length messages If a broken ucan device gets a message with the message length field set to 0, then the driver will loop for forever in ucan_read_bulk_callback(), hanging the system. If the length is 0, just skip the message and go on to the next one. This has been fixed in the kvaser_usb driver in the past in commit 0c73772cd2b8 ("can: kvaser_usb: leaf: Fix potential infinite loop in command parsers"), so there must be some broken devices out there like this somewhere.

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/13b646eec3ba1131180803f5aaf1fee23540ad8f Patch
https://git.kernel.org/stable/c/1e446fd0582ad8be9f6dafb115fc2e7245f9bea7 Patch
https://git.kernel.org/stable/c/aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588 Patch
https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc Patch
https://git.kernel.org/stable/c/bd85f21a6219aeae4389d700c54f1799f4b814e0 Patch
https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9 Patch
https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc Patch
https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
History

29 May 2026, 14:27

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/13b646eec3ba1131180803f5aaf1fee23540ad8f - () https://git.kernel.org/stable/c/13b646eec3ba1131180803f5aaf1fee23540ad8f - Patch
References () https://git.kernel.org/stable/c/1e446fd0582ad8be9f6dafb115fc2e7245f9bea7 - () https://git.kernel.org/stable/c/1e446fd0582ad8be9f6dafb115fc2e7245f9bea7 - Patch
References () https://git.kernel.org/stable/c/aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588 - () https://git.kernel.org/stable/c/aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588 - Patch
References () https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc - () https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc - Patch
References () https://git.kernel.org/stable/c/bd85f21a6219aeae4389d700c54f1799f4b814e0 - () https://git.kernel.org/stable/c/bd85f21a6219aeae4389d700c54f1799f4b814e0 - Patch
References () https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9 - () https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9 - Patch
References () https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc - () https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc - Patch
References () https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115 - () https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115 - Patch
CWE CWE-835

18 Apr 2026, 09:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc -
  • () https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115 -
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: can: ucan: Corrección de bucle infinito por mensajes de longitud cero Si un dispositivo ucan defectuoso recibe un mensaje con el campo de longitud del mensaje establecido en 0, entonces el controlador entrará en un bucle infinito en ucan_read_bulk_callback(), colgando el sistema. Si la longitud es 0, simplemente omita el mensaje y pase al siguiente. Esto ha sido corregido en el controlador kvaser_usb en el pasado en el commit 0c73772cd2b8 ('can: kvaser_usb: leaf: Corrección de posible bucle infinito en los analizadores de comandos'), así que debe haber algunos dispositivos defectuosos por ahí como este en algún lugar.

25 Mar 2026, 11:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-25 11:16

Updated : 2026-05-29 14:27

NVD link : CVE-2026-23298

Mitre link : CVE-2026-23298

CVE.ORG link : CVE-2026-23298

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')