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efi_loader: memory leak in efi_set_bootdev() 

efi_set_bootdev() may be called repeatedly.
Free the memory allocated for device paths in previous calls.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2018-09-16 07:20:21 +02:00 committed by Alexander Graf
parent 8887acc685
commit 79276eb243
1 changed files with 7 additions and 0 deletions
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7
cmd/bootefi.c
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@ -603,6 +603,13 @@ void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
char filename[32] = { 0 }; /* dp->str is u16[32] long */ char filename[32] = { 0 }; /* dp->str is u16[32] long */
char *s; char *s;
/* efi_set_bootdev is typically called repeatedly, recover memory */
efi_free_pool(bootefi_device_path);
efi_free_pool(bootefi_image_path);
/* If blk_get_device_part_str fails, avoid duplicate free. */
bootefi_device_path = NULL;
bootefi_image_path = NULL;
if (strcmp(dev, "Net")) { if (strcmp(dev, "Net")) {
struct blk_desc *desc; struct blk_desc *desc;
disk_partition_t fs_partition; disk_partition_t fs_partition;