Description
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/20210207105934.2001-1-thunder.leizhen@huawei.com/
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1879445dfa7bbd6fe21b09c5cc72f4934798afed to < 555a70f7fff03bd669123487905c47ae27dbdaacaffected1879445dfa7bbd6fe21b09c5cc72f4934798afed to < ed1f67465327cec4457bb988775245b199da86e6affected1879445dfa7bbd6fe21b09c5cc72f4934798afed to < a9938d6d78a238d6ab8de57a4d3dcf77adceb9bbaffected1879445dfa7bbd6fe21b09c5cc72f4934798afed to < 3ed8832aeaa9a37b0fc386bb72ff604352567c80affected1879445dfa7bbd6fe21b09c5cc72f4934798afed to < 630146203108bf6b8934eec0dfdb3e46dcb917deaffected1879445dfa7bbd6fe21b09c5cc72f4934798afed to < 7eeacc6728c5478e3c01bc82a1f08958eaa12366affected1879445dfa7bbd6fe21b09c5cc72f4934798afed to < dabe299425b1a53a69461fed7ac8922ea6733a25affected1879445dfa7bbd6fe21b09c5cc72f4934798afed to < a506bd5756290821a4314f502b4bafc2afcf5260affected
Linux Linux
Default version status: affected
4.7affected0 to < 4.7unaffected4.9.269 to ≤ 4.9.*unaffected4.14.233 to ≤ 4.14.*unaffected4.19.191 to ≤ 4.19.*unaffected5.4.120 to ≤ 5.4.*unaffected5.10.38 to ≤ 5.10.*unaffected5.11.22 to ≤ 5.11.*unaffected5.12.5 to ≤ 5.12.*unaffected5.13 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac ↗
- https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6 ↗
- https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb ↗
- https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80 ↗
- https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de ↗
- https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366 ↗
- https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25 ↗
- https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260 ↗