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CVE-2022-48779

net: mscc: ocelot: fix use-after-free in ocelot_vlan_del()

High7.8EPSS 0.22%
Published
Updated
Reserved
Assigned by
Linux

Description

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().

Scores

CVSS scores of CVE-2022-48779, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.22% · top 88% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

Affected products

  • Linux · Linux

    • affected d4004422f6f9fa8e55c04482008c1c9f9edd2d19 – < c98bed60cdd7f22237ae256cc9c1c3087206b8a2
    • affected d4004422f6f9fa8e55c04482008c1c9f9edd2d19 – < ef57640575406f57f5b3393cf57f457b0ace837e

  • Linux · Linux

    • affected 5.16
    • unaffected < 5.16
    • unaffected 5.16.11 – ≤ 5.16.*
    • unaffected 5.17 – ≤ *

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .