In the Linux kernel, the following vulnerability has been resolved:

net/tls: fix kernel panic when alloc_page failed

We cannot set frag_list to NULL pointer when alloc_page failed.
It will be used in tls_strp_check_queue_ok when the next time
tls_strp_read_sock is called.

This is because we don't reset full_len in tls_strp_flush_anchor_copy()
so the recv path will try to continue handling the partial record
on the next call but we dettached the rcvq from the frag list.
Alternative fix would be to reset full_len.

Unable to handle kernel NULL pointer dereference
at virtual address 0000000000000028
 Call trace:
 tls_strp_check_rcv+0x128/0x27c
 tls_strp_data_ready+0x34/0x44
 tls_data_ready+0x3c/0x1f0
 tcp_data_ready+0x9c/0xe4
 tcp_data_queue+0xf6c/0x12d0
 tcp_rcv_established+0x52c/0x798

https://git.kernel.org/stable/c/406d05da26835943568e61bb751c569efae071d4

https://git.kernel.org/stable/c/491deb9b8c4ad12fe51d554a69b8165b9ef9429f

https://git.kernel.org/stable/c/5f1f833cb388592bb46104463a1ec1b7c41975b6

https://git.kernel.org/stable/c/8f7f96549bc55e4ef3a6b499bc5011e5de2f46c4

https://git.kernel.org/stable/c/a11b8c0be6acd0505a58ff40d474bd778b25b93a