In the Linux kernel, the following vulnerability has been resolved:
cxl/port: Hold port reference until decoder release
KASAN + DEBUG_KOBJECT_RELEASE reports a potential use-after-free in
cxl_decoder_release() where it goes to reference its parent, a cxl_port,
to free its id back to port->decoder_ida.
BUG: KASAN: use-after-free in to_cxl_port+0x18/0x90 [cxl_core]
Read of size 8 at addr ffff888119270908 by task kworker/35:2/379
CPU: 35 PID: 379 Comm: kworker/35:2 Tainted: G OE 5.17.0-rc2+ #198
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
Workqueue: events kobject_delayed_cleanup
Call Trace:
<TASK>
dump_stack_lvl+0x59/0x73
print_address_description.constprop.0+0x1f/0x150
? to_cxl_port+0x18/0x90 [cxl_core]
kasan_report.cold+0x83/0xdf
? to_cxl_port+0x18/0x90 [cxl_core]
to_cxl_port+0x18/0x90 [cxl_core]
cxl_decoder_release+0x2a/0x60 [cxl_core]
device_release+0x5f/0x100
kobject_cleanup+0x80/0x1c0
The device core only guarantees parent lifetime until all children are
unregistered. If a child needs a parent to complete its ->release()
callback that child needs to hold a reference to extend the lifetime of
the parent.
CVSS
No CVSS.
References
Configurations
Configuration 1 (hide)
|
History
25 Mar 2025, 15:07
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| References | () https://git.kernel.org/stable/c/49f2dab77a5e1354f5da6ccdc9346a8212697be2 - Patch | |
| References | () https://git.kernel.org/stable/c/518bb96367123062b48b0a9842f2864249b565f6 - Patch | |
| References | () https://git.kernel.org/stable/c/74be98774dfbc5b8b795db726bd772e735d2edd4 - Patch | |
| References | () https://git.kernel.org/stable/c/b0022ca445d5fc4d0c89d15dcd0f855977b22c1d - Patch |
26 Feb 2025, 07:00
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-02-26 07:00
Updated : 2025-03-25 15:07
NVD link : CVE-2022-49223
Mitre link : CVE-2022-49223
JSON object : View
Products Affected
linux
- linux_kernel
CWE
No CWE.