CVE-2023-3439

CVSS 4.7 MEDIUMEPSS 0.3%CWE-416

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.7EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

28 Jun 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

n/a · Linux Kernel (mctp)

References

https://bugzilla.redhat.com/show_bug.cgi?id=2217915 https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269 http://www.openwall.com/lists/oss-security/2023/07/02/1