CVE-2023-3439

Description

A flaw was found in the MCTP protocol in the Linux kernel. The function mctp_unregister() reclaims the device's relevant resource when a netcard detaches. However, a running routine may be unaware of this and cause the use-after-free of the mdev->addrs object, potentially leading to a denial of service.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Third-Party Advisory openwall.com Third-Party Advisory redhat.com
Affected: n/a Linux Kernel (mctp)
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2217915 patch third party advisory issue tracking
https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269 patch
http://www.openwall.com/lists/oss-security/2023/07/02/1 patch mailing list third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-3439?
CVE-2023-3439 has been scored as a medium severity vulnerability.
How to fix CVE-2023-3439?
To fix CVE-2023-3439, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-3439 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-3439 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-3439?
CVE-2023-3439 affects n/a Linux Kernel (mctp).
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