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fuse: reject internal errno

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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>
This commit is contained in:
Miklos Szeredi 2021-06-22 09:15:35 +02:00
parent 80ef08670d
commit 49221cf86d
1 changed files with 1 additions and 1 deletions
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2
fs/fuse/dev.c
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@ -1867,7 +1867,7 @@ 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 copy_finish;
spin_lock(&fpq->lock);