Critical severity · published Sep 5, 2024
CVE-2024-43102
umtx Kernel panic or Use-After-Free
10.0
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
FreeBSD · FreeBSD
14.1-RELEASE before p4; 14.0-RELEASE before p10; 13.3-RELEASE before p6 · source: vendor, NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-43102
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-43102
Vendor Advisory
https://security.freebsd.org/advisories/FreeBSD-SA-24:14.umtx.asc
security.netapp.com
https://security.netapp.com/advisory/ntap-20240916-0001/
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