CVE-2024-47794

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: There is a potential infinite loop issue that can occur when using a combination of tail calls and freplace in the Linux kernel. This issue arises because the tail call cnt in entry freplace resets to zero each time entry freplace is executed, causing the tail call mechanism to never terminate, eventually leading to a kernel panic. The problem is caused by the attach target for entry freplace of tailcall freplace.c leading to an infinite loop: entry tc -> subprog tc -> entry freplace --tailcall-> entry tc. To fix this issue, the solution is twofold: prevent updating a program extended by an freplace program to a prog array map, and prevent extending a program that is already part of a prog array map with an freplace program.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.