CVE-2022-50423— ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于acpi_ut_copy_ipackage_to_ipackage函数存在释放后重用，可能导致内存损坏。
Possible ATT&CK Techniques 2 AI
T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 28
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 8aa5e56eeb61a099ea6519eb30ee399e1bc043ce< 133462d35dae95edb944af86b986d4c9dec59bd1 |
affected |
8aa5e56eeb61a099ea6519eb30ee399e1bc043ce< 02f237423c9c6a18e062de2d474f85d5659e4eb9 |
affected | ||
8aa5e56eeb61a099ea6519eb30ee399e1bc043ce< c9125b643fc51b8e662f2f614096ceb45a0adbc3 |
affected | ||
8aa5e56eeb61a099ea6519eb30ee399e1bc043ce< dfdde4d5138bc023897033a5ac653a84e94805be |
affected | ||
8aa5e56eeb61a099ea6519eb30ee399e1bc043ce< 02617006b5a46f2ea55ac61f5693c7afd7bf9276 |
affected | ||
8aa5e56eeb61a099ea6519eb30ee399e1bc043ce< 6fde666278f91b85d71545a0ebbf41d8d7af8074 |
affected | ||
8aa5e56eeb61a099ea6519eb30ee399e1bc043ce< f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6 |
affected | ||
8aa5e56eeb61a099ea6519eb30ee399e1bc043ce< 01f2c2052ea50fb9a8ce12e4e83aed0267934ef0 |
affected | ||
| … +20 more rows | |||
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I. Basic Information for CVE-2022-50423
Vulnerability Information
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Vulnerability Title
ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于acpi_ut_copy_ipackage_to_ipackage函数存在释放后重用，可能导致内存损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-50423
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total
| CVE-2023-53517 | 9.8 CRITICAL | tipc: do not update mtu if msg_max is too small in mtu negotiation |
| CVE-2023-53454 | 8.8 HIGH | HID: multitouch: Correct devm device reference for hidinput input_dev name |
| CVE-2025-39918 | 8.8 HIGH | wifi: mt76: fix linked list corruption |
| CVE-2025-39919 | 8.8 HIGH | wifi: mt76: mt7996: add missing check for rx wcid entries |
| CVE-2022-50442 | 8.4 HIGH | fs/ntfs3: Validate buffer length while parsing index |
| CVE-2023-53493 | 8.4 HIGH | accel/qaic: tighten bounds checking in decode_message() |
| CVE-2022-50421 | 7.8 HIGH | rpmsg: char: Avoid double destroy of default endpoint |
| CVE-2023-53484 | 7.8 HIGH | lib: cpu_rmap: Avoid use after free on rmap->obj array entries |
| CVE-2022-50440 | 7.8 HIGH | drm/vmwgfx: Validate the box size for the snooped cursor |
| CVE-2022-50454 | 7.8 HIGH | drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() |
| CVE-2025-39924 | 7.8 HIGH | erofs: fix invalid algorithm for encoded extents |
| CVE-2023-53510 | 7.8 HIGH | scsi: ufs: core: Fix handling of lrbp->cmd |
| CVE-2023-53465 | 7.8 HIGH | soundwire: qcom: fix storing port config out-of-bounds |
| CVE-2025-39927 | 7.8 HIGH | ceph: fix race condition validating r_parent before applying state |
| CVE-2022-50432 | 7.8 HIGH | kernfs: fix use-after-free in __kernfs_remove |
| CVE-2023-53492 | 7.8 HIGH | netfilter: nf_tables: do not ignore genmask when looking up chain by id |
| CVE-2022-50437 | 7.8 HIGH | drm/msm/hdmi: fix memory corruption with too many bridges |
| CVE-2023-53494 | 7.8 HIGH | crypto: xts - Handle EBUSY correctly |
| CVE-2023-53495 | 7.8 HIGH | net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() |
| CVE-2023-53504 | 7.8 HIGH | RDMA/bnxt_re: Properly order ib_device_unalloc() to avoid UAF |
Showing top 20 of 169 CVEs. View all on vendor page → →
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Same vendor: Linux
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bpf: Infer zext_dst based on static register liveness analys -
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V. Comments for CVE-2022-50423
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