Peter Zijlstra c0aec35f86 perf: Revert to requiring CAP_SYS_ADMIN for uprobes ... [ Upstream commit ba677dbe77 ] Jann reports that uprobes can be used destructively when used in the middle of an instruction. The kernel only verifies there is a valid instruction at the requested offset, but due to variable instruction length cannot determine if this is an instruction as seen by the intended execution stream. Additionally, Mark Rutland notes that on architectures that mix data in the text segment (like arm64), a similar things can be done if the data word is 'mistaken' for an instruction. As such, require CAP_SYS_ADMIN for uprobes. Fixes: c9e0924e5c ("perf/core: open access to probes for CAP_PERFMON privileged process") Reported-by: Jann Horn <jannh@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/CAG48ez1n4520sq0XrWYDHKiKxE_+WCfAK+qt9qkY4ZiBGmL-5g@mail.gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2025-07-17 18:30:46 +02:00
..
callchain.c	uaccess: add force_uaccess_{begin,end} helpers	2020-08-12 10:57:59 -07:00
core.c	perf: Revert to requiring CAP_SYS_ADMIN for uprobes	2025-07-17 18:30:46 +02:00
hw_breakpoint.c	perf/hw_breakpoint: Replace deprecated CPU-hotplug functions	2021-08-26 09:14:36 +02:00
internal.h	perf/aux: Fix AUX buffer serialization	2024-09-12 11:07:51 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ring_buffer.c	perf/ring_buffer: Allow the EPOLLRDNORM flag for poll	2025-04-10 14:31:57 +02:00
uprobes.c	uprobes: fix kernel info leak via "[uprobes]" vma	2024-10-17 15:11:45 +02:00