// For flags

CVE-2022-48748

net: bridge: vlan: fix memory leak in __allowed_ingress

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

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

net: bridge: vlan: fix memory leak in __allowed_ingress

When using per-vlan state, if vlan snooping and stats are disabled,
untagged or priority-tagged ingress frame will go to check pvid state.
If the port state is forwarding and the pvid state is not
learning/forwarding, untagged or priority-tagged frame will be dropped
but skb memory is not freed.
Should free skb when __allowed_ingress returns false.

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net: bridge: vlan: corrige la pérdida de memoria en __allowed_ingress Cuando se usa el estado por VLAN, si la vigilancia de VLAN y las estadísticas están deshabilitadas, el marco de ingreso sin etiquetar o con etiqueta de prioridad irá a verificar pvid estado. Si el estado del puerto está reenviando y el estado del pvid no está aprendiendo/reenviando, se descartará la trama sin etiquetar o con etiqueta de prioridad, pero no se liberará la memoria skb. Debería liberar skb cuando __allowed_ingress devuelva falso.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-06-20 CVE Reserved
  • 2024-06-20 CVE Published
  • 2024-06-21 EPSS Updated
  • 2024-12-19 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
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"
 >= 5.6 < 5.10.96
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.10.96"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.6 < 5.15.19
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.15.19"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.6 < 5.16.5
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.16.5"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.6 < 5.17
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.17"
en
Affected