Description
In the Linux kernel, the following vulnerability has been resolved: tunnels: fix kasan splat when generating ipv4 pmtu error If we try to emit an icmp error in response to a nonliner skb, we get BUG: KASAN: slab-out-of-bounds in ip_compute_csum+0x134/0x220 Read of size 4 at addr ffff88811c50db00 by task iperf3/1691 CPU: 2 PID: 1691 Comm: iperf3 Not tainted 6.5.0-rc3+ #309 [..] kasan_report+0x105/0x140 ip_compute_csum+0x134/0x220 iptunnel_pmtud_build_icmp+0x554/0x1020 skb_tunnel_check_pmtu+0x513/0xb80 vxlan_xmit_one+0x139e/0x2ef0 vxlan_xmit+0x1867/0x2760 dev_hard_start_xmit+0x1ee/0x4f0 br_dev_queue_push_xmit+0x4d1/0x660 [..] ip_compute_csum() cannot deal with nonlinear skbs, so avoid it. After this change, splat is gone and iperf3 is no longer stuck.
Product status
4cb47a8644cc9eb8ec81190a50e79e6530d0297f before 5850c391fd7e25662334cb3cbf29a62bcbff1084
4cb47a8644cc9eb8ec81190a50e79e6530d0297f before e95808121953410db8c59f0abfde70ac0d34222c
4cb47a8644cc9eb8ec81190a50e79e6530d0297f before da5f42a6e7485fbb7a6dbd6a2b3045e19e4df5cc
4cb47a8644cc9eb8ec81190a50e79e6530d0297f before fe6a9f7516735be9fdabab00e47ef7a3403a174d
4cb47a8644cc9eb8ec81190a50e79e6530d0297f before 6a7ac3d20593865209dceb554d8b3f094c6bd940
5.9
Any version before 5.9
5.10.191
5.15.127
6.1.46
6.4.11
6.5
References
git.kernel.org/...c/5850c391fd7e25662334cb3cbf29a62bcbff1084
git.kernel.org/...c/e95808121953410db8c59f0abfde70ac0d34222c
git.kernel.org/...c/da5f42a6e7485fbb7a6dbd6a2b3045e19e4df5cc
git.kernel.org/...c/fe6a9f7516735be9fdabab00e47ef7a3403a174d
git.kernel.org/...c/6a7ac3d20593865209dceb554d8b3f094c6bd940
