CVE-2023-20744 — In vcu, there is a possible use after free due to a logic error

In vcu, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07519142; Issue ID: ALPS07519200.

01What is this vulnerability?

In vcu, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07519142; Issue ID: ALPS07519200.

02Affected products

Vendor	Product	Versions
MediaTek, Inc.	MT6789, MT6855, MT8185, MT8195, MT8365, MT8395, MT8781, MT8786, MT8789, MT8791, MT8797	Android 12.0, 13.0 / Yocto 4.0 / Iot-Yocto 22.2

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: 2023-06-06T12:11:39.255Z
• Last modified: 2025-01-07T21:00:26.142Z

09References

• corp.mediatek.com — https://corp.mediatek.com/product-security-bulletin/June-2023