Medium severity4.7NVD Advisory· Published Jun 28, 2023· Updated Jun 17, 2026
CVE-2023-3439
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 5 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.15,<=5.17
- cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
3- www.openwall.com/lists/oss-security/2023/07/02/1nvdMailing ListPatchThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
- github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269nvdPatch
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