CVE-2023-6039: Kernel: use-after-free in drivers/net/usb/lan78xx.c in lan78xx_disconnect
First published: Wed Nov 08 2023(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/Kernel | <6.5 | 6.5 |
| Linux Linux kernel | <6.5 | |
| Linux Linux kernel | =6.5-rc1 | |
| Linux Linux kernel | =6.5-rc2 | |
| Linux Linux kernel | =6.5-rc3 | |
| Linux Linux kernel | =6.5-rc4 | |
| debian/linux | <=6.1.115-1<=6.1.119-1 | 5.10.223-1 5.10.226-1 6.12.5-1 |
| <6.5 | ||
| =6.5-rc1 | ||
| =6.5-rc2 | ||
| =6.5-rc3 | ||
| =6.5-rc4 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2248755
- https://access.redhat.com/security/cve/CVE-2023-6039
- https://github.com/torvalds/linux/commit/1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3
- https://launchpad.net/bugs/cve/CVE-2023-6039
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6039
- https://nvd.nist.gov/vuln/detail/CVE-2023-6039
- https://security-tracker.debian.org/tracker/CVE-2023-6039
- https://ubuntu.com/security/CVE-2023-6039
- https://git.kernel.org/linus/1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3
Frequently Asked Questions
What is CVE-2023-6039?
CVE-2023-6039 is a use-after-free vulnerability in the lan78xx_disconnect function in the drivers/net/usb/lan78xx.c file in the Linux Kernel.
What is the severity of CVE-2023-6039?
The severity of CVE-2023-6039 is medium with a score of 5.5.
How does CVE-2023-6039 affect Red Hat Kernel 6.5?
Red Hat Kernel 6.5 is affected by CVE-2023-6039.
How can a local attacker exploit CVE-2023-6039?
A local attacker can exploit CVE-2023-6039 by detaching the LAN78XX USB device, which causes a use-after-free flaw and may crash the system.
Where can I find more information about CVE-2023-6039?
More information about CVE-2023-6039 can be found at the Red Hat Security Advisory and the GitHub commit referenced in the description.
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