diff options
| author | Hangyu Hua <hbh25y@gmail.com> | 2023-10-27 11:03:02 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 11:57:17 +0100 |
| commit | 48b3189399556f94e54427a3f0d241abc4e57946 (patch) | |
| tree | d66f896b049cb1000e5be101ccbadb87e18a7f3b /net | |
| parent | 9a4cc8e1ad739ae3bfbdf4112567cbbe3cf0a407 (diff) | |
9p/net: fix possible memory leak in p9_check_errors()
[ Upstream commit ce07087964208eee2ca2f9ee4a98f8b5d9027fe6 ]
When p9pdu_readf() is called with "s?d" attribute, it allocates a pointer
that will store a string. But when p9pdu_readf() fails while handling "d"
then this pointer will not be freed in p9_check_errors().
Fixes: 51a87c552dfd ("9p: rework client code to use new protocol support functions")
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Message-ID: <20231027030302.11927-1-hbh25y@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/9p/client.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/9p/client.c b/net/9p/client.c index 86bbc7147fc1..b0e7cb7e1a54 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -540,12 +540,14 @@ static int p9_check_errors(struct p9_client *c, struct p9_req_t *req) return 0; if (!p9_is_proto_dotl(c)) { - char *ename; + char *ename = NULL; err = p9pdu_readf(&req->rc, c->proto_version, "s?d", &ename, &ecode); - if (err) + if (err) { + kfree(ename); goto out_err; + } if (p9_is_proto_dotu(c) && ecode < 512) err = -ecode; |