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authorLinus Walleij <linus.walleij@linaro.org>2020-05-27 16:15:52 +0200
committerLinus Walleij <linus.walleij@linaro.org>2020-05-27 16:15:52 +0200
commitce1d966a302229a88bcb4398a5ca76d657b06848 (patch)
tree812671d666fef8b5a955087cff5dc7b3cd555a35 /fs/overlayfs/export.c
parentf8af9113b1cf71cd21b0a027d38b06c15989c789 (diff)
parent9cb1fd0efd195590b828b9b865421ad345a4a145 (diff)
downloadlinux-ce1d966a302229a88bcb4398a5ca76d657b06848.tar.bz2
Merge tag 'v5.7-rc7' into devel
Linux 5.7-rc7
Diffstat (limited to 'fs/overlayfs/export.c')
-rw-r--r--fs/overlayfs/export.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/overlayfs/export.c b/fs/overlayfs/export.c
index 475c61f53f0f..ed5c1078919c 100644
--- a/fs/overlayfs/export.c
+++ b/fs/overlayfs/export.c
@@ -783,6 +783,9 @@ static struct ovl_fh *ovl_fid_to_fh(struct fid *fid, int buflen, int fh_type)
if (fh_type != OVL_FILEID_V0)
return ERR_PTR(-EINVAL);
+ if (buflen <= OVL_FH_WIRE_OFFSET)
+ return ERR_PTR(-EINVAL);
+
fh = kzalloc(buflen, GFP_KERNEL);
if (!fh)
return ERR_PTR(-ENOMEM);