diff options
| author | Fedor Pchelkin | 2023-12-06 23:09:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2024-01-01 12:39:04 +0000 |
| commit | 805611157d684b46473cd343e0c95e888918d8c4 (patch) | |
| tree | 1f99fdde553690a1c522603d4bf40ef554cc482e /Documentation | |
| parent | 4c775b4cd8dd676e83f4a67d3e34f5ff80f0c7cf (diff) | |
net: 9p: avoid freeing uninit memory in p9pdu_vreadf
commit ff49bf1867578f23a5ffdd38f927f6e1e16796c4 upstream.
If some of p9pdu_readf() calls inside case 'T' in p9pdu_vreadf() fails,
the error path is not handled properly. *wnames or members of *wnames
array may be left uninitialized and invalidly freed.
Initialize *wnames to NULL in beginning of case 'T'. Initialize the first
*wnames array element to NULL and nullify the failing *wnames element so
that the error path freeing loop stops on the first NULL element and
doesn't proceed further.
Found by Linux Verification Center (linuxtesting.org).
Fixes: ace51c4dd2f9 ("9p: add new protocol support code")
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Message-ID: <20231206200913.16135-1-pchelkin@ispras.ru>
Cc: stable@vger.kernel.org
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions