Oleg Nesterov 20f9206f02 uprobes: fix kernel info leak via "[uprobes]" vma ... ANBZ: #12666 commit f561b48d633ac2e7d0d667020fc634a96ade33a0 stable. commit 34820304cc upstream. xol_add_vma() maps the uninitialized page allocated by __create_xol_area() into userspace. On some architectures (x86) this memory is readable even without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ, although this doesn't really matter, debugger can read this memory anyway. Link: https://lore.kernel.org/all/20240929162047.GA12611@redhat.com/ Reported-by: Will Deacon <will@kernel.org> Fixes: d4b3b6384f ("uprobes/core: Allocate XOL slots for uprobes use") Cc: stable@vger.kernel.org Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> [Fixes Conflicts] Fix conflicts caused by the manually construction of xol_mapping Fixes: CVE-2024-49975 Signed-off-by: Xiao Long <xiaolong@openanolis.org> Signed-off-by: Yuanhe Shu <xiangzao@linux.alibaba.com> Reviewed-by: Tianchen Ding <dtcccc@linux.alibaba.com> Reviewed-by: Shuai Xue <xueshuai@linux.alibaba.com> Link: https://gitee.com/anolis/cloud-kernel/pulls/4546		2025-02-07 16:31:44 +08:00
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Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
callchain.c	uaccess: add force_uaccess_{begin,end} helpers	2020-08-12 10:57:59 -07:00
core.c	perf: Allow a PMU to have a parent	2024-12-03 05:41:21 +00:00
hw_breakpoint.c	powerpc/watchpoint: Don't allow concurrent perf and ptrace events	2020-05-19 00:14:45 +10:00
internal.h	perf: Fix perf_aux_size() for greater-than 32-bit size	2024-09-05 17:22:31 +08:00
ring_buffer.c	perf: Fix default aux_watermark calculation	2024-09-05 17:22:31 +08:00
uprobes.c	uprobes: fix kernel info leak via "[uprobes]" vma	2025-02-07 16:31:44 +08:00