Kohei Enju 4b22ec1685 efivarfs: fix error propagation in efivar_entry_get() ...

efivar_entry_get() always returns success even if the underlying
__efivar_entry_get() fails, masking errors.

This may result in uninitialized heap memory being copied to userspace
in the efivarfs_file_read() path.

Fix it by returning the error from __efivar_entry_get().

Fixes: 2d82e6227e ("efi: vars: Move efivar caching layer into efivarfs")
Cc: <stable@vger.kernel.org> # v6.1+
Signed-off-by: Kohei Enju <kohei@enjuk.jp>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

2026-01-19 08:40:36 +01:00

..

file.c

efivarfs: Revert "allow creation of zero length files"

2025-03-07 12:31:04 +01:00

inode.c

convert efivarfs

2025-11-16 01:35:04 -05:00

internal.h

efivarfs: support freeze/thaw

2025-05-09 12:41:23 +02:00

Kconfig

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00

Makefile

efi: vars: Move efivar caching layer into efivarfs

2022-06-24 20:40:19 +02:00

super.c

Merge tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2025-12-05 14:36:21 -08:00

vars.c

efivarfs: fix error propagation in efivar_entry_get()

2026-01-19 08:40:36 +01:00