Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: clear skb2->cb[] in ip6ip6_err() ip6ip6_err() clones an outer IPv6 ICMP error skb, pulls it to the quoted inner IPv6 packet, and then passes the clone to icmpv6_send(). The clone still carries the outer packet's inet6_skb_parm in skb->cb. If the outer packet had a Home Address Option, IP6CB(skb2)->dsthao remains non-zero after skb_pull(). icmpv6_send() later calls mip6_addr_swap(), which uses that stale dsthao offset against the quoted inner packet. A malformed inner destination-options header can then make the HAO lookup and address swap run past the end of the quoted packet and corrupt skb_shared_info. Clear skb2->cb[] before pulling the quoted inner IPv6 packet so the reply path does not reuse metadata left by the outer IPv6 stack.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e490d1d85cf5e191791979e5f260d32eb4f703a8 before 44fe898df302e91c5ee5acbc71ffa74e78e6c183; affected e490d1d85cf5e191791979e5f260d32eb4f703a8 before 0dadb0620ab65949a8bc2439dd28ea3c942fe87d; affected e490d1d85cf5e191791979e5f260d32eb4f703a8 before b6816536a2990c0db44a26130a03e40b441e829b; affected e490d1d85cf5e191791979e5f260d32eb4f703a8 before 64e41736a26f37ab6215bc2e6df125df05aceb08; affected e490d1d85cf5e191791979e5f260d32eb4f703a8 before 484134e1eb07d700a73b1e4bbf3fb503e299be60; affected e490d1d85cf5e191791979e5f260d32eb4f703a8 before 4eb15c465337b18f44716c499cd6ad63eee0ad54; affected e490d1d85cf5e191791979e5f260d32eb4f703a8 before fbf40faa0414b753212494ad197542002e66ed9e; affected e490d1d85cf5e191791979e5f260d32eb4f703a8 before f803c086399da277b5d0ff36a107d0f162751800 |
| Linux / Linux | affected 2.6.22; unaffected 0 before 2.6.22; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.152 through 6.6.*; unaffected 6.12.104 through 6.12.*; unaffected 6.18.45 through 6.18.*; unaffected 7.1.9 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/44fe898df302e91c5ee5acbc71ffa74e78e6c183
- https://git.kernel.org/stable/c/0dadb0620ab65949a8bc2439dd28ea3c942fe87d
- https://git.kernel.org/stable/c/b6816536a2990c0db44a26130a03e40b441e829b
- https://git.kernel.org/stable/c/64e41736a26f37ab6215bc2e6df125df05aceb08
- https://git.kernel.org/stable/c/484134e1eb07d700a73b1e4bbf3fb503e299be60
- https://git.kernel.org/stable/c/4eb15c465337b18f44716c499cd6ad63eee0ad54
- https://git.kernel.org/stable/c/fbf40faa0414b753212494ad197542002e66ed9e
- https://git.kernel.org/stable/c/f803c086399da277b5d0ff36a107d0f162751800
ADP enrichment
No English description supplied.
No references supplied.