CVE-2024-50034

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.11.0-rc7-syzkaller-g5f5673607153

Description: The issue is related to a panic on IPPROTO SMC in the Linux kernel. When INET PROTOSW ICSK is set, icsk->icsk sync mss must also be set. The problem occurs due to a lack of synchronization of MSS within sys connect file for AF SMC. This can lead to a kernel NULL pointer dereference. A patch has been added to prevent such panic by performing a simple return, laying the groundwork for future support of this feature for IPPROTO SMC.

Recommendations: For Linux kernel versions prior to 6.11.0-rc7-syzkaller-g5f5673607153, consider applying the patch that adds a toy implementation to prevent the panic. This patch performs a simple return to prevent the kernel NULL pointer dereference, providing a temporary solution until full support for synchronizing MSS within sys connect file for AF SMC is implemented.