CVE-2022-50423

HIGH EPSS 4.8%
Published Oct 1, 20259mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Oct 1, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥3.10.55  –  <3.11
linuxlinux_kernel*≥3.12.29  –  <3.13
linuxlinux_kernel*≥3.14.19  –  <3.15
linuxlinux_kernel*≥3.16.3  –  <4.9.337
linuxlinux_kernel*≥4.10  –  <4.14.303
linuxlinux_kernel*≥4.15  –  <4.19.270
linuxlinux_kernel*≥4.20  –  <5.4.229
linuxlinux_kernel*≥5.5  –  <5.10.163
linuxlinux_kernel*≥5.11  –  <5.15.86
linuxlinux_kernel*≥5.16  –  <6.0.16
linuxlinux_kernel*≥6.1  –  <6.1.2

References 9

  • git.kernel.org https://git.kernel.org/stable/c/01f2c2052ea50fb9a8ce12e4e83aed0267934ef0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/02617006b5a46f2ea55ac61f5693c7afd7bf9276
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/02f237423c9c6a18e062de2d474f85d5659e4eb9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/133462d35dae95edb944af86b986d4c9dec59bd1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/470188b09e92d83c5a997f25f0e8fb8cd2bc3469
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6fde666278f91b85d71545a0ebbf41d8d7af8074
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c9125b643fc51b8e662f2f614096ceb45a0adbc3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dfdde4d5138bc023897033a5ac653a84e94805be
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/01f2c2052ea50fb9a8ce12e4e83aed0267934ef0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/02617006b5a46f2ea55ac61f5693c7afd7bf9276
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/02f237423c9c6a18e062de2d474f85d5659e4eb9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/133462d35dae95edb944af86b986d4c9dec59bd1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/470188b09e92d83c5a997f25f0e8fb8cd2bc3469
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6fde666278f91b85d71545a0ebbf41d8d7af8074
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c9125b643fc51b8e662f2f614096ceb45a0adbc3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dfdde4d5138bc023897033a5ac653a84e94805be
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6
    Patch