Code Aurora ACDB Audio Driver Stack-based Buffer Overflow Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-09-15

[ Description ]Official description

Stack-based buffer overflow in the acdb_ioctl function in audio_acdb.c in the acdb audio driver for the Linux kernel 2.6.x and 3.x, as used in Qualcomm Innovation Center (QuIC) Android contributions for MSM devices and other products, allows attackers to gain privileges via an application that leverages /dev/msm_acdb access and provides a large size value in an ioctl argument.

CISA: The Code Aurora audio calibration database (acdb) audio driver contains a stack-based buffer overflow vulnerability that allows for privilege escalation. Code Aurora is used in third-party products such as Qualcomm and Android.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 6 Oct 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• www.codeaurora.org/projects/security-advisories/stack-based-buffer-overflow-acdb-audio-…Broken LinkVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource