CVE-2023-6039

Kernel: use-after-free in drivers/net/usb/lan78xx.c in lan78xx_disconnect

Published Nov 9, 2023 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
A use-after-free flaw was found in lan78xx_disconnect in drivers/net/usb/lan78xx.c in the network sub-component, net/usb/lan78xx in the Linux Kernel. This flaw allows a local attacker to crash the system when the LAN78XX USB device detaches.

Remediation

Vendor Workaround

Mitigation for this issue is to skip loading the affected module "lan78xx" onto the system till we have a fix available, this can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time. ~~~ How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-58296 A use-after-free flaw was found in lan78xx_disconnect in drivers/net/usb/lan78xx.c in the network sub-component, net/usb/lan78xx in the Linux Kernel. This flaw allows a local attacker to crash the system when the LAN78XX USB device detaches.
Ubuntu USN Ubuntu USN USN-6534-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6534-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6534-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-3 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-6628-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6628-2 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6706-1 Linux kernel (OEM) vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Feb 27, 2025, 8:34 PM
Reserved
Nov 8, 2023, 7:23 PM
Status
Modified
Published
Nov 9, 2023, 3:15 PM
Modified
Jun 17, 2026, 6:49 AM
Severity
Moderate
Public date
Jul 26, 2023, 6:30 AM