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[PULL,1/2] block/ssh: fix possible segmentation fault when .desc is not null-terminated

Message ID 20180201040635.5749-2-jcody@redhat.com
State New
Headers show
Series [PULL,1/2] block/ssh: fix possible segmentation fault when .desc is not null-terminated | expand

Commit Message

Jeff Cody Feb. 1, 2018, 4:06 a.m. UTC 
From: Murilo Opsfelder Araujo <muriloo@linux.vnet.ibm.com>

This patch prevents a possible segmentation fault when .desc members are checked
against NULL.

The ssh_runtime_opts was added by commit
8a6a80896d6af03b8ee0c17cdf37219eca2588a7 ("block/ssh: Use QemuOpts for runtime
options").

This fix was inspired by
http://lists.nongnu.org/archive/html/qemu-devel/2018-01/msg00883.html.

Fixes: 8a6a80896d6af03b8ee0c17cdf37219eca2588a7 ("block/ssh: Use QemuOpts for runtime options")
Cc: Max Reitz <mreitz@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
---
 block/ssh.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/block/ssh.c b/block/ssh.c
index b049a16..8890a0c 100644
--- a/block/ssh.c
+++ b/block/ssh.c
@@ -556,6 +556,7 @@  static QemuOptsList ssh_runtime_opts = {
             .type = QEMU_OPT_STRING,
             .help = "Defines how and what to check the host key against",
         },
+        { /* end of list */ }
     },
 };