CVE-2026-68289

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> tipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream()<br /> <br /> In tipc_recvmsg(), the copy length is computed as:<br /> <br /> copy = min_t(int, dlen - offset, buflen);<br /> <br /> buflen is size_t but min_t(int, ...) casts it to int. When buflen<br /> exceeds INT_MAX (e.g. 0xFFFFFFFF via io_uring provided buffers), it<br /> wraps negative, wins the comparison, and the negative copy length<br /> propagates to simple_copy_to_iter() where int-to-size_t promotion<br /> makes it SIZE_MAX, triggering a WARN_ON. tipc_recvstream() has the<br /> same pattern.<br /> <br /> Kernel panic - not syncing: kernel: panic_on_warn set ...<br /> RIP: 0010:simple_copy_to_iter+0x9e/0xd0 (net/core/datagram.c:521)<br /> Call Trace:<br /> __skb_datagram_iter+0x123/0x8b0 (net/core/datagram.c:402)<br /> skb_copy_datagram_iter+0x77/0x1a0 (net/core/datagram.c:534)<br /> tipc_recvmsg+0x3d7/0xe80 (net/tipc/socket.c:1934)<br /> io_recvmsg+0x47e/0xda0<br /> <br /> Fix by changing min_t(int, ...) to min_t(size_t, ...) in both<br /> functions. The result is always