CVE-2025-21790

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.14.0-rc1-syzkaller-00276-g69b54314c975

Description A vulnerability in the Linux kernel has been identified, where the vxlan init() function fails to check the return value of vxlan vnigroup init(), potentially leading to a crash. This issue was spotted by syzbot and is characterized by a general protection fault, likely due to a non-canonical address. The vulnerability is related to a null pointer dereference in the vxlan vnigroup uninit() function.

Recommendations For Linux kernel versions prior to 6.14.0-rc1-syzkaller-00276-g69b54314c975, consider updating to a newer version that includes the fix for this issue. As a temporary workaround, disabling the vxlan vnigroup uninit() function may help prevent the crash, but this is not a recommended long-term solution.