CVE-2024-39281 — The command ctl_persistent_reserve_out allows the caller to specify an arbitrary

The command ctl_persistent_reserve_out allows the caller to specify an arbitrary size which will be passed to the kernel's memory allocator.

01What is this vulnerability?

The command ctl_persistent_reserve_out allows the caller to specify an arbitrary size which will be passed to the kernel's memory allocator.

02Affected products

Vendor	Product	Versions
FreeBSD	FreeBSD	14.1-RELEASE, 13.4-RELEASE, 13.3-RELEASE

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-11-12T15:01:57.151Z
• Last modified: 2025-01-10T13:06:46.829Z

09References

• security.freebsd.org — https://security.freebsd.org/advisories/FreeBSD-SA-24:18.ctl.asc