// For flags

CVE-2024-38553

net: fec: remove .ndo_poll_controller to avoid deadlocks

Severity Score

"-"
*CVSS v-

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:

net: fec: remove .ndo_poll_controller to avoid deadlocks

There is a deadlock issue found in sungem driver, please refer to the
commit ac0a230f719b ("eth: sungem: remove .ndo_poll_controller to avoid
deadlocks"). The root cause of the issue is that netpoll is in atomic
context and disable_irq() is called by .ndo_poll_controller interface
of sungem driver, however, disable_irq() might sleep. After analyzing
the implementation of fec_poll_controller(), the fec driver should have
the same issue. Due to the fec driver uses NAPI for TX completions, the
.ndo_poll_controller is unnecessary to be implemented in the fec driver,
so fec_poll_controller() can be safely removed.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: fec: elimine .ndo_poll_controller para evitar interbloqueos. Se encontró un problema de interbloqueo en el controlador sungem; consulte el commit ac0a230f719b ("eth: sungem: elimine .ndo_poll_controller para evitar interbloqueos "). La causa principal del problema es que netpoll está en un contexto atómico y la interfaz .ndo_poll_controller del controlador sungem llama a enable_irq(); sin embargo, enable_irq() puede estar inactivo. Después de analizar la implementación de fec_poll_controller(), el controlador fec debería tener el mismo problema. Debido a que el controlador fec utiliza NAPI para las completaciones de TX, no es necesario implementar .ndo_poll_controller en el controlador fec, por lo que fec_poll_controller() se puede eliminar de forma segura.

*Credits: N/A
CVSS Scores
Attack Vector
-
Attack Complexity
-
Privileges Required
-
User Interaction
-
Scope
-
Confidentiality
-
Integrity
-
Availability
-
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-06-18 CVE Reserved
  • 2024-06-19 CVE Published
  • 2024-08-28 EPSS Updated
  • 2024-11-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
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"
 >= 3.2 < 6.6.33
Search vendor "Linux" for product "Linux Kernel" and version " >= 3.2 < 6.6.33"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 3.2 < 6.8.12
Search vendor "Linux" for product "Linux Kernel" and version " >= 3.2 < 6.8.12"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 3.2 < 6.9.3
Search vendor "Linux" for product "Linux Kernel" and version " >= 3.2 < 6.9.3"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 3.2 < 6.10
Search vendor "Linux" for product "Linux Kernel" and version " >= 3.2 < 6.10"
en
Affected