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| author |   Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2019-07-15 12:00:20 +0200 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2019-07-17 10:03:54 +0200 |
| commit | e9e7e85d75f3731079ffd77c1a66f037aef04fe7 (patch) | |
| tree | 65f27b789ff1758a4eea9a5942c283cad8bf97f0 /include/net/xfrm.h | |
| parent | Merge tag 'mlx5-fixes-2019-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux (diff) | |
| download | linux-dev-e9e7e85d75f3731079ffd77c1a66f037aef04fe7.tar.xz linux-dev-e9e7e85d75f3731079ffd77c1a66f037aef04fe7.zip | |
xfrm interface: avoid corruption on changelink
The new parameters must not be stored in the netdev_priv() before
validation, it may corrupt the interface. Note also that if data is NULL,
only a memset() is done.
$ ip link add xfrm1 type xfrm dev lo if_id 1
$ ip link add xfrm2 type xfrm dev lo if_id 2
$ ip link set xfrm1 type xfrm dev lo if_id 2
RTNETLINK answers: File exists
$ ip -d link list dev xfrm1
5: xfrm1@lo: <NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/none 00:00:00:00:00:00 brd 00:00:00:00:00:00 promiscuity 0 minmtu 68 maxmtu 1500
xfrm if_id 0x2 addrgenmode eui64 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
=> "if_id 0x2"
Fixes: f203b76d7809 ("xfrm: Add virtual xfrm interfaces")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Tested-by: Julien Floret <julien.floret@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'include/net/xfrm.h')
0 files changed, 0 insertions, 0 deletions