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| author | Xin Long <lucien.xin@gmail.com> | 2020-02-09 21:15:29 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-01 11:02:06 +0200 |
| commit | a5c5cf6f24bb37fdb79f519fd7b905374dfbfc32 (patch) | |
| tree | fe45b6c6ea6a8802641763b518a93ddccd349656 /include | |
| parent | 1b92d81d4cc208fe5eb3389b257fe932cf0ac331 (diff) | |
xfrm: fix uctx len check in verify_sec_ctx_len
commit 171d449a028573b2f0acdc7f31ecbb045391b320 upstream.
It's not sufficient to do 'uctx->len != (sizeof(struct xfrm_user_sec_ctx) +
uctx->ctx_len)' check only, as uctx->len may be greater than nla_len(rt),
in which case it will cause slab-out-of-bounds when accessing uctx->ctx_str
later.
This patch is to fix it by return -EINVAL when uctx->len > nla_len(rt).
Fixes: df71837d5024 ("[LSM-IPSec]: Security association restriction.")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions