Race condition and use-after-free vulnerability in Linux kernel timer locking mechanism

Race condition and use-after-free vulnerability in Linux kernel timer locking mechanism

CVE-2016-2547 · MEDIUM Severity

AV:L/AC:M/AU:N/C:N/I:N/A:C

sound/core/timer.c in the Linux kernel before 4.4.1 employs a locking approach that does not consider slave timer instances, which allows local users to cause a denial of service (race condition, use-after-free, and system crash) via a crafted ioctl call.

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