Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v4.4.290

Description: The issue is related to the isdn component, specifically the cpai function, where a check on ctr->cnr is necessary to prevent an array index out of bounds condition. The actual impact and attack plausibility of this issue have not been proven yet.

Recommendations: For Linux Kernel versions prior to v4.4.290, update to version v4.4.290 or later, which includes the fix for this issue by commit e8b8de17e164c9f1b7777f1c6f99d05539000036.