by Kastro
Paper/Archive/CVE-2024-43102

CVE-2024-43102

FreeBSD FreeBSD — umtx Kernel panic or Use-After-Free

EPSS 0.7%CVSS 10.0
critical.is priorityof 100
41
CVSS 10.0 (NVD)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 52.5.525 × 2010.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of UMTX_OP_SHM can lead to decreasing the reference count of the object representing the mapping too many times, causing it to be freed too early. A malicious code exercizing the UMTX_SHM_DESTROY sub-request in parallel can panic the kernel or enable further Use-After-Free attacks, potentially including code execution or Capsicum sandbox escape.

Affected

ProductAffectedFixed inSource
FreeBSD14.1-RELEASE – < p4p4CNA
FreeBSD14.0-RELEASE – < p10p10CNA
FreeBSD13.3-RELEASE – < p6p6CNA
freebsd14.1 – < 14.1_p414.1_p4CISA-ADP
freebsd14.0 – < 14.0_p1014.0_p10CISA-ADP
freebsd13.3 – < 13.3_p613.3_p6CISA-ADP

Scores by source

NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorysecurity.freebsd.org/advisories/FreeBSD-SA-24:14.umtx.ascrefsecurity.netapp.com/advisory/ntap-20240916-0001