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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2018-12-29 13:56:37 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-12-30 20:22:48 -0800 |
| commit | d5c7c745f254c6cb98b3b3f15fe789b8bd770c72 (patch) | |
| tree | 7fc6a09d7ea3da996a921d319f2d7ae22a321039 /net/netrom | |
| parent | c433570458e49bccea5c551df628d058b3526289 (diff) | |
net/wan: fix a double free in x25_asy_open_tty()
When x25_asy_open() fails, it already cleans up by itself,
so its caller doesn't need to free the memory again.
It seems we still have to call x25_asy_free() to clear the SLF_INUSE
bit, so just set these pointers to NULL after kfree().
Reported-and-tested-by: syzbot+5e5e969e525129229052@syzkaller.appspotmail.com
Fixes: 3b780bed3138 ("x25_asy: Free x25_asy on x25_asy_open() failure.")
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netrom')
0 files changed, 0 insertions, 0 deletions