CVE-2023-0965 — Compiler removal of buffer clearing in sli_cryptoacc_transparent_key_agreement i

Compiler removal of buffer clearing in sli_cryptoacc_transparent_key_agreement in Silicon Labs Gecko Platform SDK v4.2.1 and earlier results in key material duplication to RAM.

01What is this vulnerability?

Compiler removal of buffer clearing in sli_cryptoacc_transparent_key_agreement in Silicon Labs Gecko Platform SDK v4.2.1 and earlier results in key material duplication to RAM.

02Affected products

Vendor	Product	Versions
silabs.com	Gecko Platform	0

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: 2023-05-18T18:38:56.910Z
• Last modified: 2025-01-22T14:33:25.929Z

09References

• github.com — https://github.com/SiliconLabs/gecko_sdk
• community.silabs.com — https://community.silabs.com/sfc/servlet.shepherd/document/download/0698Y00000U1…