CVE-2022-48779
Last modified
CVE-2022-48779 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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().. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
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().
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.16, < 5.16.11 |
References
- https://git.kernel.org/stable/c/c98bed60cdd7f22237ae256cc9c1c3087206b8a2Mailing List, Patch
- https://git.kernel.org/stable/c/ef57640575406f57f5b3393cf57f457b0ace837eMailing List, Patch
- https://git.kernel.org/stable/c/c98bed60cdd7f22237ae256cc9c1c3087206b8a2Mailing List, Patch
- https://git.kernel.org/stable/c/ef57640575406f57f5b3393cf57f457b0ace837eMailing List, Patch
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-48779?
How severe is CVE-2022-48779?
How do I fix CVE-2022-48779?
Are you affected by CVE-2022-48779?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST