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block/ssh: fix possible segmentation fault when .desc is not null-terminated

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

The ssh_runtime_opts was added by commit
8a6a80896d ("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: 8a6a80896d ("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>
This commit is contained in:
Murilo Opsfelder Araujo 2018-01-05 12:44:40 -02:00 committed by Jeff Cody
parent b05631954d
commit fbd5c4c0db
1 changed files with 1 additions and 0 deletions
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block/ssh.c
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@ -556,6 +556,7 @@ static QemuOptsList ssh_runtime_opts = {
.type = QEMU_OPT_STRING, .type = QEMU_OPT_STRING,
.help = "Defines how and what to check the host key against", .help = "Defines how and what to check the host key against",
}, },
{ /* end of list */ }
}, },
}; };