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    Subject[PATCH 5.10 007/131] net/nfc/rawsock.c: fix a permission check bug
    Date
    From: Jeimon <jjjinmeng.zhou@gmail.com>

    [ Upstream commit 8ab78863e9eff11910e1ac8bcf478060c29b379e ]

    The function rawsock_create() calls a privileged function sk_alloc(), which requires a ns-aware check to check net->user_ns, i.e., ns_capable(). However, the original code checks the init_user_ns using capable(). So we replace the capable() with ns_capable().

    Signed-off-by: Jeimon <jjjinmeng.zhou@gmail.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    net/nfc/rawsock.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
    index 9c7eb8455ba8..5f1d438a0a23 100644
    --- a/net/nfc/rawsock.c
    +++ b/net/nfc/rawsock.c
    @@ -329,7 +329,7 @@ static int rawsock_create(struct net *net, struct socket *sock,
    return -ESOCKTNOSUPPORT;

    if (sock->type == SOCK_RAW) {
    - if (!capable(CAP_NET_RAW))
    + if (!ns_capable(net->user_ns, CAP_NET_RAW))
    return -EPERM;
    sock->ops = &rawsock_raw_ops;
    } else {
    --
    2.30.2


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