Fix slab out-of-bounds on insufficient headroom for IPv6 packets
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- v2 Latest2 patches 1 replyIn review
- v12 patches 1 replySuperseded
Patches in v2 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | ipv6: Check available headroom in ip6_xmit() even without optionsnet/ | +21 | 0 replies | |
| 2/2 | neighbour: Avoid writing before skb->head in neigh_hh_output()include/ | +23 | 0 replies |
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Cover letter [PATCH net v2 0/2] Fix slab out-of-bounds on insufficient headroom for IPv6 packets
Patch 1/2 fixes a slab out-of-bounds occurring with short SCTP packets over IPv4 over L2TP over IPv6 on a configuration with relatively low HEADER_MAX.
Patch 2/2 makes sure we avoid writing before the allocated buffer in neigh_hh_output() in case the headroom is enough for the unaligned hardware header size, but not enough for the aligned one, and that we warn if we hit this condition.
Stefano Brivio (2):
ipv6: Check available headroom in ip6_xmit() even without options
neighbour: Avoid writing before skb->head in neigh_hh_output()
include/net/neighbour.h | 28 ++++++++++++++++++++++----- net/ipv6/ip6_output.c | 42 ++++++++++++++++++++--------------------- 2 files changed, 44 insertions(+), 26 deletions(-)
Signature · 1 line
2.19.2