CVE-2023-53259

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> VMCI: check context-&gt;notify_page after call to get_user_pages_fast() to avoid GPF<br /> <br /> The call to get_user_pages_fast() in vmci_host_setup_notify() can return<br /> NULL context-&gt;notify_page causing a GPF. To avoid GPF check if<br /> context-&gt;notify_page == NULL and return error if so.<br /> <br /> general protection fault, probably for non-canonical address<br /> 0xe0009d1000000060: 0000 [#1] PREEMPT SMP KASAN NOPTI<br /> KASAN: maybe wild-memory-access in range [0x0005088000000300-<br /> 0x0005088000000307]<br /> CPU: 2 PID: 26180 Comm: repro_34802241 Not tainted 6.1.0-rc4 #1<br /> Hardware name: Red Hat KVM, BIOS 1.15.0-2.module+el8.6.0 04/01/2014<br /> RIP: 0010:vmci_ctx_check_signal_notify+0x91/0xe0<br /> Call Trace:<br /> <br /> vmci_host_unlocked_ioctl+0x362/0x1f40<br /> __x64_sys_ioctl+0x1a1/0x230<br /> do_syscall_64+0x3a/0x90<br /> entry_SYSCALL_64_after_hwframe+0x63/0xcd