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Li Zetao 01f2c2052e ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() 
[ Upstream commit 470188b09e ]

There is an use-after-free reported by KASAN:

  BUG: KASAN: use-after-free in acpi_ut_remove_reference+0x3b/0x82
  Read of size 1 at addr ffff888112afc460 by task modprobe/2111
  CPU: 0 PID: 2111 Comm: modprobe Not tainted 6.1.0-rc7-dirty
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
  Call Trace:
   <TASK>
   kasan_report+0xae/0xe0
   acpi_ut_remove_reference+0x3b/0x82
   acpi_ut_copy_iobject_to_iobject+0x3be/0x3d5
   acpi_ds_store_object_to_local+0x15d/0x3a0
   acpi_ex_store+0x78d/0x7fd
   acpi_ex_opcode_1A_1T_1R+0xbe4/0xf9b
   acpi_ps_parse_aml+0x217/0x8d5
   ...
   </TASK>

The root cause of the problem is that the acpi_operand_object
is freed when acpi_ut_walk_package_tree() fails in
acpi_ut_copy_ipackage_to_ipackage(), lead to repeated release in
acpi_ut_copy_iobject_to_iobject(). The problem was introduced
by "8aa5e56eeb61" commit, this commit is to fix memory leak in
acpi_ut_copy_iobject_to_iobject(), repeatedly adding remove
operation, lead to "acpi_operand_object" used after free.

Fix it by removing acpi_ut_remove_reference() in
acpi_ut_copy_ipackage_to_ipackage(). acpi_ut_copy_ipackage_to_ipackage()
is called to copy an internal package object into another internal
package object, when it fails, the memory of acpi_operand_object
should be freed by the caller.

Fixes: 8aa5e56eeb ("ACPICA: Utilities: Fix memory leak in acpi_ut_copy_iobject_to_iobject")
Signed-off-by: Li Zetao <lizetao1@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2022-12-31 13:31:59 +01:00
Documentation debugfs: fix error when writing negative value to atomic_t debugfs file 2022-12-31 13:31:58 +01:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
arch perf/x86/intel/uncore: Fix reference count leak in __uncore_imc_init_box() 2022-12-31 13:31:57 +01:00
block block-6.1-2022-11-25 2022-11-25 17:50:57 -08:00
certs certs: make system keyring depend on built-in x509 parser 2022-09-24 04:31:18 +09:00
crypto treewide: use get_random_bytes() when possible 2022-10-11 17:42:58 -06:00
drivers ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() 2022-12-31 13:31:59 +01:00
fs ocfs2: fix memory leak in ocfs2_mount_volume() 2022-12-31 13:31:58 +01:00
include debugfs: fix error when writing negative value to atomic_t debugfs file 2022-12-31 13:31:58 +01:00
init init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash 2022-11-22 22:42:38 +09:00
io_uring io_uring: Fix a null-ptr-deref in io_tctx_exit_cb() 2022-12-07 06:45:20 -07:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-05 10:54:44 -08:00
kernel cpu/hotplug: Do not bail-out in DYING/STARTING sections 2022-12-31 13:31:59 +01:00
lib lib/notifier-error-inject: fix error when writing -errno to debugfs file 2022-12-31 13:31:58 +01:00
mm 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -08:00
net ipv6: avoid use-after-free in ip6_fragment() 2022-12-07 20:14:35 -08:00
rust Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
samples VFIO updates for v6.1-rc1 2022-10-12 14:46:48 -07:00
scripts - Handle different output of readelf on different distros running 2022-11-27 12:08:17 -08:00
security KEYS: encrypted: fix key instantiation with user-provided data 2022-12-21 17:48:11 +01:00
sound ALSA: hda/realtek: fix mute/micmute LEDs for a HP ProBook 2022-12-21 17:48:08 +01:00
tools selftests/efivarfs: Add checking of the test return value 2022-12-31 13:31:56 +01:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt Merge branch 'kvm-dwmw2-fixes' into HEAD 2022-11-23 18:59:45 -05:00
.clang-format inet: ping: use hlist_nulls rcu iterator during lookup 2022-12-01 12:42:46 +01:00
.cocciconfig
…
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
.mailmap 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -08:00
.rustfmt.toml rust: add `.rustfmt.toml` 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove Michal Marek from Kbuild maintainers 2022-11-16 14:53:00 +09:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -08:00
Makefile Linux 6.1.1 2022-12-21 17:48:12 +01:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.