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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
46e6b992c2502b094e61da6994f1363f3b7c1413 to < 90c8482a5d9791259ba77bfdc1849fc5128b4be7affected46e6b992c2502b094e61da6994f1363f3b7c1413 to < e9365368b483328639c03fc730448dccd5a25b6baffected46e6b992c2502b094e61da6994f1363f3b7c1413 to < ac5977001eee7660c643f8e07a2de9001990b7b8affected46e6b992c2502b094e61da6994f1363f3b7c1413 to < e72fd1389a5364bc6aa6312ecf30bdb5891b9486affected46e6b992c2502b094e61da6994f1363f3b7c1413 to < 9ab5cf19fb0e4680f95e506d6c544259bf1111c4affected
Linux Linux
Default version status: affected
4.16affected0 to < 4.16unaffected5.15.181 to ≤ 5.15.*unaffected6.1.120 to ≤ 6.1.*unaffected6.6.60 to ≤ 6.6.*unaffected6.11.7 to ≤ 6.11.*unaffected6.12 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/90c8482a5d9791259ba77bfdc1849fc5128b4be7 ↗
- https://git.kernel.org/stable/c/e9365368b483328639c03fc730448dccd5a25b6b ↗
- https://git.kernel.org/stable/c/ac5977001eee7660c643f8e07a2de9001990b7b8 ↗
- https://git.kernel.org/stable/c/e72fd1389a5364bc6aa6312ecf30bdb5891b9486 ↗
- https://git.kernel.org/stable/c/9ab5cf19fb0e4680f95e506d6c544259bf1111c4 ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html ↗