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Vulnerability Change Records for CVE-2024-49944

Change History

New CVE Received from kernel.org 10/21/2024 2:15:15 PM

Action Type Old Value New Value
Added Description

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

sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start

In sctp_listen_start() invoked by sctp_inet_listen(), it should set the
sk_state back to CLOSED if sctp_autobind() fails due to whatever reason.

Otherwise, next time when calling sctp_inet_listen(), if sctp_sk(sk)->reuse
is already set via setsockopt(SCTP_REUSE_PORT), sctp_sk(sk)->bind_hash will
be dereferenced as sk_state is LISTENING, which causes a crash as bind_hash
is NULL.

  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
  RIP: 0010:sctp_inet_listen+0x7f0/0xa20 net/sctp/socket.c:8617
  Call Trace:
   <TASK>
   __sys_listen_socket net/socket.c:1883 [inline]
   __sys_listen+0x1b7/0x230 net/socket.c:1894
   __do_sys_listen net/socket.c:1902 [inline]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/7f64cb5b4d8c872296eda0fdce3bcf099eec7aa7 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/8beee4d8dee76b67c75dc91fd8185d91e845c160 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/9230a59eda0878d7ecaa901d876aec76f57bd455 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/dd70c8a89ef99c3d53127fe19e51ef47c3f860fa [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/e7a8442195e8ebd97df467ce4742980ab57edcce [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/e914bf68dab88815a7ae7b7a3a5e8913c8ff14a5 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/f032e1dac30b3376c7d6026fb01a8c403c47a80d [No types assigned]