// 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.

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.

*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
Attack Vector
Local
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
None
Availability
Partial
* 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
  • 2024-12-19 CVE Updated
  • 2025-03-30 EPSS 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