Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mptcp: remove tcp ulp setsockopt support TCP_ULP setsockopt cannot be used for mptcp because its already used internally to plumb subflow (tcp) sockets to the mptcp layer. syzbot managed to trigger a crash for mptcp connections that are in fallback mode: KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 1 PID: 1083 Comm: syz-executor.3 Not tainted 5.16.0-rc2-syzkaller #0 RIP: 0010:tls_build_proto net/tls/tls_main.c:776 [inline] [..] __tcp_set_ulp net/ipv4/tcp_ulp.c:139 [inline] tcp_set_ulp+0x428/0x4c0 net/ipv4/tcp_ulp.c:160 do_tcp_setsockopt+0x455/0x37c0 net/ipv4/tcp.c:3391 mptcp_setsockopt+0x1b47/0x2400 net/mptcp/sockopt.c:638 Remove support for TCP_ULP setsockopt.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d9e4c129181004ec94b315b0c9db5eeb09da75e6 before 3de0c86d42f841d1d64f316cd949e65c566f0734; affected d9e4c129181004ec94b315b0c9db5eeb09da75e6 before 404cd9a22150f24acf23a8df2ad0c094ba379f57 |
| Linux / Linux | affected 5.13; unaffected 0 before 5.13; unaffected 5.15.11 through 5.15.*; unaffected 5.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3de0c86d42f841d1d64f316cd949e65c566f0734
- https://git.kernel.org/stable/c/404cd9a22150f24acf23a8df2ad0c094ba379f57
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.