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Filename Latest commit message Latest commit date
Li Zetao dfdde4d513 ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
[ Upstream commit 470188b09e92d83c5a997f25f0e8fb8cd2bc3469 ]

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 "8aa5e56eeb" 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>
2023-01-18 11:40:57 +01:00
arch perf/x86/intel/uncore: Fix reference count leak in hswep_has_limit_sbox() 2023-01-18 11:40:54 +01:00
block block: unhash blkdev part inode when the part is deleted 2022-12-19 12:24:16 +01:00
certs
crypto
Documentation debugfs: fix error when writing negative value to atomic_t debugfs file 2023-01-18 11:40:56 +01:00
drivers ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() 2023-01-18 11:40:57 +01:00
fs ocfs2: fix memory leak in ocfs2_mount_volume() 2023-01-18 11:40:56 +01:00
include debugfs: fix error when writing negative value to atomic_t debugfs file 2023-01-18 11:40:56 +01:00
init
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:23:06 +01:00
kernel genirq/irqdesc: Don't try to remove non-existing sysfs files 2023-01-18 11:40:55 +01:00
lib lib/notifier-error-inject: fix error when writing -errno to debugfs file 2023-01-18 11:40:55 +01:00
LICENSES
mm mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page 2022-12-19 12:24:15 +01:00
net Bluetooth: L2CAP: Fix u8 overflow 2023-01-18 11:40:49 +01:00
samples
scripts scripts/faddr2line: Fix regression in name resolution on ppc64le 2022-12-08 11:23:02 +01:00
security
sound ASoC: ops: Correct bounds check for second channel on SX controls 2022-12-19 12:24:16 +01:00
tools selftests/efivarfs: Add checking of the test return value 2023-01-18 11:40:54 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.228 2022-12-19 12:24:17 +01:00
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.