CVE-2024-43102

10.0 criticalEPSS 0.7%

Critical (10.0) in freebsd freebsd. EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

10.0 critical

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWEs: CWE-416, CWE-911
Published: 2024-09-05
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

freebsd:freebsd

References

https://security.freebsd.org/advisories/FreeBSD-SA-24:14.umtx.asc
https://security.netapp.com/advisory/ntap-20240916-0001/

Check your stack JSON