Tracker / CVE-2021-47006
CVE-2021-47006
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook The commit 1879445dfa7b ("perf/core: Set event's default ::overflow_handler()") set a default event->overflow_handler in perf_event_alloc(), and replace the check event->overflow_handler with is_default_overflow_handler(), but one is missing. Currently, the bp->overflow_handler can not be NULL. As a result, enable_single_step() is always not invoked. Comments from Zhen Lei: https://patchwork.kernel.org/project/linux-arm-kernel/patch/[email protected]/
Affected products and versions
| linux | linux_kernel · 4.10 → 4.14.233 |
|---|---|
| linux | linux_kernel · 4.15 → 4.19.191 |
| linux | linux_kernel · 4.20 → 5.4.120 |
| linux | linux_kernel · 4.7 → 4.9.269 |
| linux | linux_kernel · 5.11 → 5.11.22 |
| linux | linux_kernel · 5.12 → 5.12.5 |
| linux | linux_kernel · 5.5 → 5.10.38 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.