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| author | Miklos Szeredi <mszeredi@redhat.com> | 2021-06-22 10:15:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-20 17:22:39 +0300 |
| commit | c9ad6621c7cc9221fa4b00874bd951fe7fc92106 (patch) | |
| tree | e30c3ddad96b2295a007d54cc60eaefaacaa1b98 | |
| parent | 48cd035cad5b5fad0648aa8294c4223bedb166dd (diff) | |
| download | linux-c9ad6621c7cc9221fa4b00874bd951fe7fc92106.tar.xz | |
fuse: reject internal errno
commit 49221cf86d18bb66fe95d3338cb33bd4b9880ca5 upstream.
Don't allow userspace to report errors that could be kernel-internal.
Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Fixes: 334f485df85a ("[PATCH] FUSE - device functions")
Cc: <stable@vger.kernel.org> # v2.6.14
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/fuse/dev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index d74675364f7b..38a12b0e395f 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -1931,7 +1931,7 @@ static ssize_t fuse_dev_do_write(struct fuse_dev *fud, } err = -EINVAL; - if (oh.error <= -1000 || oh.error > 0) + if (oh.error <= -512 || oh.error > 0) goto err_finish; spin_lock(&fpq->lock); |