kernel: xfrm: add NULL check in xfrm_update_ae_params

In the Linux kernel, the following vulnerability has been resolved: xfrm: add NULL check in xfrmupdateaeparams Normally, x-replayesn and x-preplayesn should be allocated at xfrmallocreplaystateesn... in xfrmstateconstruct..., hence the xfrmupdateaeparams... is okay to update them. However, the...

CVE-2023-3772

A flaw was found in the Linux kernel’s IP framework for transforming packets XFRM subsystem. This issue may allow a malicious user with CAPNETADMIN privileges to directly dereference a NULL pointer in xfrmupdateaeparams, leading to a possible kernel crash and denial of service...