Vulnerabilities > CVE-2023-3439 - Use After Free vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
HIGH Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- http://www.openwall.com/lists/oss-security/2023/07/02/1
- http://www.openwall.com/lists/oss-security/2023/07/02/1
- https://bugzilla.redhat.com/show_bug.cgi?id=2217915
- https://bugzilla.redhat.com/show_bug.cgi?id=2217915
- https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269
- https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269