CVE-2026-64436 net: af_key: initialize alg_key_len for IPComp states

In the Linux kernel, the following vulnerability has been resolved: net: afkey: initialize algkeylen for IPComp states pfkeymsg2xfrmstate handles the IPComp SADBXSATYPEIPCOMP case by allocating x-calg and copying only the algorithm name: x-calg = kmallocobjx-calg; if !x-calg err = -ENOMEM; goto...

CVE-2026-64436

The CVE-2026-64436 issue in the Linux kernel affects IPComp state handling in PF_KEY paths. In pfkey_msg2xfrm_state, x->calg is allocated and the algorithm name is copied, but calg->alg_key_len is never initialized, even though calg is 68 bytes and alg_key_len is used later during xfrm_algo...