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Vulnerability Change Records for CVE-2024-50258

Change History

New CVE Received by NIST 11/09/2024 6:15:11 AM

Action Type Old Value New Value
Added Description

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

net: fix crash when config small gso_max_size/gso_ipv4_max_size

Config a small gso_max_size/gso_ipv4_max_size will lead to an underflow
in sk_dst_gso_max_size(), which may trigger a BUG_ON crash,
because sk->sk_gso_max_size would be much bigger than device limits.
Call Trace:
tcp_write_xmit
    tso_segs = tcp_init_tso_segs(skb, mss_now);
        tcp_set_skb_tso_segs
            tcp_skb_pcount_set
                // skb->len = 524288, mss_now = 8
                // u16 tso_segs = 524288/8 = 65535 -> 0
                tso_segs = DIV_ROUND_UP(skb->len, mss_now)
    BUG_ON(!tso_segs)
Add check for the minimum value of gso_max_size and gso_ipv4_max_size.
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/9ab5cf19fb0e4680f95e506d6c544259bf1111c4 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/ac5977001eee7660c643f8e07a2de9001990b7b8 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/e72fd1389a5364bc6aa6312ecf30bdb5891b9486 [No types assigned]