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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Daniel Axtens <dja@axtens.net>
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Date: Fri, 25 Jun 2021 02:19:05 +1000
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Subject: [PATCH] kern/file: Do not leak device_name on error in
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grub_file_open()
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If we have an error in grub_file_open() before we free device_name, we
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will leak it.
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Free device_name in the error path and null out the pointer in the good
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path once we free it there.
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Signed-off-by: Daniel Axtens <dja@axtens.net>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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(cherry picked from commit 1499a5068839fa37cb77ecef4b5bdacbd1ed12ea)
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(cherry picked from commit 2ec50b289d8b24922433439533113087f111f110)
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---
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grub-core/kern/file.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/grub-core/kern/file.c b/grub-core/kern/file.c
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index e19aea3e51..ed69fc0f0f 100644
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--- a/grub-core/kern/file.c
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+++ b/grub-core/kern/file.c
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@@ -81,6 +81,7 @@ grub_file_open (const char *name, enum grub_file_type type)
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device = grub_device_open (device_name);
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grub_free (device_name);
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+ device_name = NULL;
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if (! device)
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goto fail;
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@@ -135,6 +136,7 @@ grub_file_open (const char *name, enum grub_file_type type)
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return file;
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fail:
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+ grub_free (device_name);
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if (device)
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grub_device_close (device);
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