CVE-2022-48779

In the Linux kernel, the following vulnerability has been resolved: net: mscc: ocelot: fix use-after-free in ocelot_vlan_del() ocelot_vlan_member_del() will free the struct ocelot_bridge_vlan, so if this is the same as the port's pvid_vlan which we access afterwards, what we're accessing is freed memory. Fix the bug by determining whether to clear ocelot_port->pvid_vlan prior to calling ocelot_vlan_member_del().

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/c98bed60cdd7f22237ae256cc9c1c3087206b8a2	Mailing List Patch
https://git.kernel.org/stable/c/ef57640575406f57f5b3393cf57f457b0ace837e	Mailing List Patch
https://git.kernel.org/stable/c/c98bed60cdd7f22237ae256cc9c1c3087206b8a2	Mailing List Patch
https://git.kernel.org/stable/c/ef57640575406f57f5b3393cf57f457b0ace837e	Mailing List Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-07-16 12:15

Updated : 2024-11-21 07:34

NVD link : CVE-2022-48779

Mitre link : CVE-2022-48779

CVE.ORG link : CVE-2022-48779

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

{"id": "CVE-2022-48779", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-07-16T12:15:03.077", "references": [{"url": "https://git.kernel.org/stable/c/c98bed60cdd7f22237ae256cc9c1c3087206b8a2", "tags": ["Mailing List", "Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ef57640575406f57f5b3393cf57f457b0ace837e", "tags": ["Mailing List", "Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c98bed60cdd7f22237ae256cc9c1c3087206b8a2", "tags": ["Mailing List", "Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/ef57640575406f57f5b3393cf57f457b0ace837e", "tags": ["Mailing List", "Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mscc: ocelot: fix use-after-free in ocelot_vlan_del()\n\nocelot_vlan_member_del() will free the struct ocelot_bridge_vlan, so if\nthis is the same as the port's pvid_vlan which we access afterwards,\nwhat we're accessing is freed memory.\n\nFix the bug by determining whether to clear ocelot_port->pvid_vlan prior\nto calling ocelot_vlan_member_del()."}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: net: mscc: ocelot: fix use-after-free en ocelot_vlan_del() ocelot_vlan_member_del() liberar\u00e1 la estructura ocelot_bridge_vlan, por lo que si es la misma que la pvid_vlan del puerto al que accedemos despu\u00e9s, a lo que accedemos es a la memoria liberada. Corrija el error determinando si se debe borrar ocelot_port->pvid_vlan antes de llamar a ocelot_vlan_member_del()."}], "lastModified": "2024-11-21T07:34:00.403", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D327234-5D4A-43DC-A6DF-BCA0CEBEC039", "versionEndExcluding": "5.16.11", "versionStartIncluding": "5.16"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}