[Virtio-fs] [PATCH] virtiofsd: Fix security.capability comparison
Dr. David Alan Gilbert (git)
dgilbert at redhat.com
Thu Apr 1 14:58:45 UTC 2021
From: "Dr. David Alan Gilbert" <dgilbert at redhat.com>
My security fix for the security.capability remap has a silly early
segfault in a simple case where there is an xattrmapping but it doesn't
remap the securty.capability.
Fixes: e586edcb41054 ("virtiofs: drop remapped security.capability xattr as needed")
Signed-off-by: Dr. David Alan Gilbert <dgilbert at redhat.com>
---
tools/virtiofsd/passthrough_ll.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index b144320e48..1553d2ef45 100644
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -2636,7 +2636,8 @@ static void parse_xattrmap(struct lo_data *lo)
strerror(ret));
exit(1);
}
- if (!strcmp(lo->xattr_security_capability, "security.capability")) {
+ if (!lo->xattr_security_capability ||
+ !strcmp(lo->xattr_security_capability, "security.capability")) {
/* 1-1 mapping, don't need to do anything */
free(lo->xattr_security_capability);
lo->xattr_security_capability = NULL;
--
2.31.1
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