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.
References (3)
Core 3
Core References
Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2217915
Mailing List, Patch, Third Party Advisory mailing-list
http://www.openwall.com/lists/oss-security/2023/07/02/1
Scores
CVSS v3
4.7
EPSS
0.0001
EPSS Percentile
0.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-416
Status
published
Products (2)
linux/linux_kernel
5.18 rc1 (4 CPE variants)
linux/linux_kernel
5.15 - 5.17
Published
Jun 28, 2023
Tracked Since
Feb 18, 2026