// For flags

CVE-2022-48670

peci: cpu: Fix use-after-free in adev_release()

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

In the Linux kernel, the following vulnerability has been resolved:

peci: cpu: Fix use-after-free in adev_release()

When auxiliary_device_add() returns an error, auxiliary_device_uninit()
is called, which causes refcount for device to be decremented and
.release callback will be triggered.

Because adev_release() re-calls auxiliary_device_uninit(), it will cause
use-after-free:
[ 1269.455172] WARNING: CPU: 0 PID: 14267 at lib/refcount.c:28 refcount_warn_saturate+0x110/0x15
[ 1269.464007] refcount_t: underflow; use-after-free.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: peci: cpu: corrige use-after-free en adev_release() Cuando auxiliar_device_add() devuelve un error, se llama a auxiliar_device_uninit(), lo que hace que se disminuya el recuento del dispositivo y . Se activará la devolución de llamada de liberación. Debido a que adev_release() vuelve a llamar a auxiliar_device_uninit(), provocará use-after-free: [1269.455172] ADVERTENCIA: CPU: 0 PID: 14267 en lib/refcount.c:28 refcount_warn_saturate+0x110/0x15 [1269.464007] refcount_t: underflow ; use-after-free.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-02-25 CVE Reserved
  • 2024-05-03 CVE Published
  • 2024-05-04 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 5.19.10
Search vendor "Linux" for product "Linux Kernel" and version " < 5.19.10"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 6.0
Search vendor "Linux" for product "Linux Kernel" and version " < 6.0"
en
Affected