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CVE-2017-15265

Description

Race condition in the ALSA subsystem in the Linux kernel before 4.13.8 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted /dev/snd/seq ioctl calls, related to sound/core/seq/seq_clientmgr.c and sound/core/seq/seq_ports.c.

POC

Reference

- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0

- https://usn.ubuntu.com/3698-1/

- https://usn.ubuntu.com/3698-2/

- https://www.oracle.com/security-alerts/cpujul2020.html

- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

Github

- https://github.com/wcventure/PERIOD