6.12-stable review patch. If anyone has any objections, please let me know.
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From: Sang-Heon Jeon ekffu200098@gmail.com
[ Upstream commit fbe2dc6a9c7318f7263f5e4d50f6272b931c5756 ]
In smb2_compound_op(), the loop that processes each command's response uses wrong indices when accessing response bufferes.
This incorrect indexing leads to improper handling of command results. Also, if incorrectly computed index is greather than or equal to MAX_COMPOUND, it can cause out-of-bounds accesses.
Fixes: 3681c74d342d ("smb: client: handle lack of EA support in smb2_query_path_info()") # 6.14 Reviewed-by: Paulo Alcantara (Red Hat) pc@manguebit.org Signed-off-by: Sang-Heon Jeon ekffu200098@gmail.com Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/smb/client/smb2inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c index b51ccfb884394..104a563dc317f 100644 --- a/fs/smb/client/smb2inode.c +++ b/fs/smb/client/smb2inode.c @@ -641,7 +641,7 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
tmp_rc = rc; for (i = 0; i < num_cmds; i++) { - char *buf = rsp_iov[i + i].iov_base; + char *buf = rsp_iov[i + 1].iov_base;
if (buf && resp_buftype[i + 1] != CIFS_NO_BUFFER) rc = server->ops->map_error(buf, false);