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| author | Zhengchao Shao <shaozhengchao@huawei.com> | 2023-07-10 17:40:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-26 14:23:32 +0200 |
| commit | e1e04cc2ef2c0c0866c19f5627149a76c2baae32 (patch) | |
| tree | 6904211aef4c42c917cc8f694224355b5371412b /net/unix/af_unix.c | |
| parent | a1639a82ce14af76b6419778d343ccbff86ee626 (diff) | |
ip_vti: fix potential slab-use-after-free in decode_session6
[ Upstream commit 6018a266279b1a75143c7c0804dd08a5fc4c3e0b ]
When ip_vti device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when ip_vti device sends IPv6 packets.
As commit f855691975bb ("xfrm6: Fix the nexthdr offset in
_decode_session6.") showed, xfrm_decode_session was originally intended
only for the receive path. IP6CB(skb)->nhoff is not set during
transmission. Therefore, set the cb field in the skb to 0 before
sending packets.
Fixes: f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions