CVE-2022-48748

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/14be8d448fca6fe7b2a413831eedd55aef6c6511
https://git.kernel.org/stable/c/446ff1fc37c74093e81db40811a07b5a19f1d797
https://git.kernel.org/stable/c/c5e216e880fa6f2cd9d4a6541269377657163098
https://git.kernel.org/stable/c/fd20d9738395cf8e27d0a17eba34169699fccdff

Configurations

No configuration.

History

03 Jul 2024, 01:39

Type	Values Removed	Values Added
CWE		CWE-400
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
Summary		(es) 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.

20 Jun 2024, 12:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-06-20 12:15

Updated : 2024-07-03 01:39

NVD link : CVE-2022-48748

Mitre link : CVE-2022-48748

CVE.ORG link : CVE-2022-48748

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

{"id": "CVE-2022-48748", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2024-06-20T12:15:13.047", "references": [{"url": "https://git.kernel.org/stable/c/14be8d448fca6fe7b2a413831eedd55aef6c6511", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/446ff1fc37c74093e81db40811a07b5a19f1d797", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c5e216e880fa6f2cd9d4a6541269377657163098", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fd20d9738395cf8e27d0a17eba34169699fccdff", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: vlan: fix memory leak in __allowed_ingress\n\nWhen using per-vlan state, if vlan snooping and stats are disabled,\nuntagged or priority-tagged ingress frame will go to check pvid state.\nIf the port state is forwarding and the pvid state is not\nlearning/forwarding, untagged or priority-tagged frame will be dropped\nbut skb memory is not freed.\nShould free skb when __allowed_ingress returns false."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net: bridge: vlan: corrige la p\u00e9rdida de memoria en __allowed_ingress Cuando se usa el estado por VLAN, si la vigilancia de VLAN y las estad\u00edsticas est\u00e1n deshabilitadas, el marco de ingreso sin etiquetar o con etiqueta de prioridad ir\u00e1 a verificar pvid estado. Si el estado del puerto est\u00e1 reenviando y el estado del pvid no est\u00e1 aprendiendo/reenviando, se descartar\u00e1 la trama sin etiquetar o con etiqueta de prioridad, pero no se liberar\u00e1 la memoria skb. Deber\u00eda liberar skb cuando __allowed_ingress devuelva falso."}], "lastModified": "2024-07-03T01:39:14.287", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}