Peter Zijlstra 8e8bf7bc6a 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 18:32:04 +02:00
..
callchain.c
core.c	perf: Revert to requiring CAP_SYS_ADMIN for uprobes	2025-07-17 18:32:04 +02:00
hw_breakpoint_test.c	perf/hw_breakpoint: test: Skip the test if dependencies unmet	2022-11-02 12:22:05 +01:00
hw_breakpoint.c	perf/hw_breakpoint: Return EOPNOTSUPP for unsupported breakpoint type	2025-06-04 14:40:09 +02:00
internal.h	perf/aux: Fix AUX buffer serialization	2024-09-12 11:10:27 +02:00
Makefile
ring_buffer.c	perf: Avoid the read if the count is already updated	2025-06-04 14:40:16 +02:00
uprobes.c	uprobes: Fix race in uprobe_free_utask	2025-03-13 12:53:24 +01:00