In the Linux kernel, the following vulnerability has been resolved:
ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
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.
References
Configurations
Configuration 1 (hide)
|
History
11 Dec 2025, 18:24
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-416 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| First Time |
Linux
Linux linux Kernel |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| References | () https://git.kernel.org/stable/c/01f2c2052ea50fb9a8ce12e4e83aed0267934ef0 - Patch | |
| References | () https://git.kernel.org/stable/c/02617006b5a46f2ea55ac61f5693c7afd7bf9276 - Patch | |
| References | () https://git.kernel.org/stable/c/02f237423c9c6a18e062de2d474f85d5659e4eb9 - Patch | |
| References | () https://git.kernel.org/stable/c/133462d35dae95edb944af86b986d4c9dec59bd1 - Patch | |
| References | () https://git.kernel.org/stable/c/470188b09e92d83c5a997f25f0e8fb8cd2bc3469 - Patch | |
| References | () https://git.kernel.org/stable/c/6fde666278f91b85d71545a0ebbf41d8d7af8074 - Patch | |
| References | () https://git.kernel.org/stable/c/c9125b643fc51b8e662f2f614096ceb45a0adbc3 - Patch | |
| References | () https://git.kernel.org/stable/c/dfdde4d5138bc023897033a5ac653a84e94805be - Patch | |
| References | () https://git.kernel.org/stable/c/f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6 - Patch |
01 Oct 2025, 12:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-10-01 12:15
Updated : 2025-12-11 18:24
NVD link : CVE-2022-50423
Mitre link : CVE-2022-50423
CVE.ORG link : CVE-2022-50423
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free