CVE-2022-49094

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net/tls: fix slab-out-of-bounds bug in decrypt_internal<br /> <br /> The memory size of tls_ctx-&gt;rx.iv for AES128-CCM is 12 setting in<br /> tls_set_sw_offload(). The return value of crypto_aead_ivsize()<br /> for "ccm(aes)" is 16. So memcpy() require 16 bytes from 12 bytes<br /> memory space will trigger slab-out-of-bounds bug as following:<br /> <br /> ==================================================================<br /> BUG: KASAN: slab-out-of-bounds in decrypt_internal+0x385/0xc40 [tls]<br /> Read of size 16 at addr ffff888114e84e60 by task tls/10911<br /> <br /> Call Trace:<br /> <br /> dump_stack_lvl+0x34/0x44<br /> print_report.cold+0x5e/0x5db<br /> ? decrypt_internal+0x385/0xc40 [tls]<br /> kasan_report+0xab/0x120<br /> ? decrypt_internal+0x385/0xc40 [tls]<br /> kasan_check_range+0xf9/0x1e0<br /> memcpy+0x20/0x60<br /> decrypt_internal+0x385/0xc40 [tls]<br /> ? tls_get_rec+0x2e0/0x2e0 [tls]<br /> ? process_rx_list+0x1a5/0x420 [tls]<br /> ? tls_setup_from_iter.constprop.0+0x2e0/0x2e0 [tls]<br /> decrypt_skb_update+0x9d/0x400 [tls]<br /> tls_sw_recvmsg+0x3c8/0xb50 [tls]<br /> <br /> Allocated by task 10911:<br /> kasan_save_stack+0x1e/0x40<br /> __kasan_kmalloc+0x81/0xa0<br /> tls_set_sw_offload+0x2eb/0xa20 [tls]<br /> tls_setsockopt+0x68c/0x700 [tls]<br /> __sys_setsockopt+0xfe/0x1b0<br /> <br /> Replace the crypto_aead_ivsize() with prot-&gt;iv_size + prot-&gt;salt_size<br /> when memcpy() iv value in TLS_1_3_VERSION scenario.