CVE-2024-50258

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: fix crash when config small gso_max_size/gso_ipv4_max_size<br /> <br /> Config a small gso_max_size/gso_ipv4_max_size will lead to an underflow<br /> in sk_dst_gso_max_size(), which may trigger a BUG_ON crash,<br /> because sk-&gt;sk_gso_max_size would be much bigger than device limits.<br /> Call Trace:<br /> tcp_write_xmit<br /> tso_segs = tcp_init_tso_segs(skb, mss_now);<br /> tcp_set_skb_tso_segs<br /> tcp_skb_pcount_set<br /> // skb-&gt;len = 524288, mss_now = 8<br /> // u16 tso_segs = 524288/8 = 65535 -&gt; 0<br /> tso_segs = DIV_ROUND_UP(skb-&gt;len, mss_now)<br /> BUG_ON(!tso_segs)<br /> Add check for the minimum value of gso_max_size and gso_ipv4_max_size.