REDHAT-BUG-1786078: Use After Free

First published: Mon Dec 23 2019(Updated: )

In the Linux kernel, sound/core/timer.c has a use-after-free caused by erroneous code refactoring. This is related to snd_timer_open and snd_timer_close_locked. The timeri variable was originally intended to be for a newly created timer instance, but was used for a different purpose after refactoring. References: <a href="https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11">https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11</a> Upstream Patch: <a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e7af6307a8a54f0b873960b32b6a644f2d0fbd97https://github.com/torvalds/linux/commit/e7af6307a8a54f0b873960b32b6a644f2d0fbd97">https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e7af6307a8a54f0b873960b32b6a644f2d0fbd97https://github.com/torvalds/linux/commit/e7af6307a8a54f0b873960b32b6a644f2d0fbd97</a>

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