CVE-2023-5369 — Before correction, the copy_file_range system call checked only for the CAP_READ

Before correction, the copy_file_range system call checked only for the CAP_READ and CAP_WRITE capabilities on the input and output file descriptors, respectively. Using an offset is logically equivalent to seeking, and the system call must additionally require the CAP_SEEK capab

01What is this vulnerability?

Before correction, the copy_file_range system call checked only for the CAP_READ and CAP_WRITE capabilities on the input and output file descriptors, respectively. Using an offset is logically equivalent to seeking, and the system call must additionally require the CAP_SEEK capability.

02Affected products

Vendor	Product	Versions
FreeBSD	FreeBSD	13.2-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

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

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: 2023-10-04T03:48:53.559Z
• Last modified: 2025-02-13T17:20:10.344Z

09References

• security.FreeBSD.org — https://security.FreeBSD.org/advisories/FreeBSD-SA-23:13.capsicum.asc
• security.netapp.com — https://security.netapp.com/advisory/ntap-20231124-0009/