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| author | Greg Kurz | 2017-02-26 23:43:32 +0100 |
|---|---|---|
| committer | Greg Kurz | 2017-02-28 11:21:15 +0100 |
| commit | ac125d993b461d4dee4d6df4d93ac3f2eb959d1d (patch) | |
| tree | 09c9cf74e1afda864a5c387c5ff109a0a34b1527 /scripts | |
| parent | 9pfs: local: statfs: don't follow symlinks (diff) | |
| download | qemu-ac125d993b461d4dee4d6df4d93ac3f2eb959d1d.tar.gz qemu-ac125d993b461d4dee4d6df4d93ac3f2eb959d1d.tar.xz qemu-ac125d993b461d4dee4d6df4d93ac3f2eb959d1d.zip | |
9pfs: local: truncate: don't follow symlinks
The local_truncate() callback is vulnerable to symlink attacks because
it calls truncate() which follows symbolic links in all path elements.
This patch converts local_truncate() to rely on open_nofollow() and
ftruncate() instead.
This partly fixes CVE-2016-9602.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions