Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: validate lwtstate->data before returning from skb_tunnel_info() skb_tunnel_info() returns pointer of lwtstate->data as ip_tunnel_info type without validation. lwtstate->data can have various types such as mpls_iptunnel_encap, etc and these are not compatible. So skb_tunnel_info() should validate before returning that pointer. Splat looks like: BUG: KASAN: slab-out-of-bounds in vxlan_get_route+0x418/0x4b0 [vxlan] Read of size 2 at addr ffff888106ec2698 by task ping/811 CPU: 1 PID: 811 Comm: ping Not tainted 5.13.0+ #1195 Call Trace: dump_stack_lvl+0x56/0x7b print_address_description.constprop.8.cold.13+0x13/0x2ee ? vxlan_get_route+0x418/0x4b0 [vxlan] ? vxlan_get_route+0x418/0x4b0 [vxlan] kasan_report.cold.14+0x83/0xdf ? vxlan_get_route+0x418/0x4b0 [vxlan] vxlan_get_route+0x418/0x4b0 [vxlan] [ ... ] vxlan_xmit_one+0x148b/0x32b0 [vxlan] [ ... ] vxlan_xmit+0x25c5/0x4780 [vxlan] [ ... ] dev_hard_start_xmit+0x1ae/0x6e0 __dev_queue_xmit+0x1f39/0x31a0 [ ... ] neigh_xmit+0x2f9/0x940 mpls_xmit+0x911/0x1600 [mpls_iptunnel] lwtunnel_xmit+0x18f/0x450 ip_finish_output2+0x867/0x2040 [ ... ]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 61adedf3e3f1d3f032c5a6a299978d91eff6d555 before e7f3c9df40515a6c6b46f36c4c94cf48a043f887; affected 61adedf3e3f1d3f032c5a6a299978d91eff6d555 before b61d327cd3cc5ea591f3bf751dd11e034f388bb5; affected 61adedf3e3f1d3f032c5a6a299978d91eff6d555 before 83bdcfbd968bcc91a0632b7b625e4a9b0cba5e0d; affected 61adedf3e3f1d3f032c5a6a299978d91eff6d555 before 8bb1589c89e61e3b182dd546f1021928ebb5c2a6; affected 61adedf3e3f1d3f032c5a6a299978d91eff6d555 before 8aa13a86964cdec4fd969ef677c6614ff068641a; affected 61adedf3e3f1d3f032c5a6a299978d91eff6d555 before 2179d96ec702cc33ead02a9ce40ece599b8538c5; affected 61adedf3e3f1d3f032c5a6a299978d91eff6d555 before a915379594f1e045421635c6316d8f3ffa018c58; affected 61adedf3e3f1d3f032c5a6a299978d91eff6d555 before 67a9c94317402b826fc3db32afc8f39336803d97 |
| Linux / Linux | affected 4.3; unaffected 0 before 4.3; unaffected 4.4.277 through 4.4.*; unaffected 4.9.277 through 4.9.*; unaffected 4.14.241 through 4.14.*; unaffected 4.19.199 through 4.19.*; unaffected 5.4.135 through 5.4.*; unaffected 5.10.53 through 5.10.*; unaffected 5.13.5 through 5.13.*; unaffected 5.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e7f3c9df40515a6c6b46f36c4c94cf48a043f887
- https://git.kernel.org/stable/c/b61d327cd3cc5ea591f3bf751dd11e034f388bb5
- https://git.kernel.org/stable/c/83bdcfbd968bcc91a0632b7b625e4a9b0cba5e0d
- https://git.kernel.org/stable/c/8bb1589c89e61e3b182dd546f1021928ebb5c2a6
- https://git.kernel.org/stable/c/8aa13a86964cdec4fd969ef677c6614ff068641a
- https://git.kernel.org/stable/c/2179d96ec702cc33ead02a9ce40ece599b8538c5
- https://git.kernel.org/stable/c/a915379594f1e045421635c6316d8f3ffa018c58
- https://git.kernel.org/stable/c/67a9c94317402b826fc3db32afc8f39336803d97
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/e7f3c9df40515a6c6b46f36c4c94cf48a043f887
- https://git.kernel.org/stable/c/b61d327cd3cc5ea591f3bf751dd11e034f388bb5
- https://git.kernel.org/stable/c/83bdcfbd968bcc91a0632b7b625e4a9b0cba5e0d
- https://git.kernel.org/stable/c/8bb1589c89e61e3b182dd546f1021928ebb5c2a6
- https://git.kernel.org/stable/c/8aa13a86964cdec4fd969ef677c6614ff068641a
- https://git.kernel.org/stable/c/2179d96ec702cc33ead02a9ce40ece599b8538c5
- https://git.kernel.org/stable/c/a915379594f1e045421635c6316d8f3ffa018c58
- https://git.kernel.org/stable/c/67a9c94317402b826fc3db32afc8f39336803d97