Masami Hiramatsu 4e9a5ae8df x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes ...

Since insn.prefixes.nbytes can be bigger than the size of
insn.prefixes.bytes[] when a prefix is repeated, the proper check must
be

  insn.prefixes.bytes[i] != 0 and i < 4

instead of using insn.prefixes.nbytes.

Introduce a for_each_insn_prefix() macro for this purpose. Debugged by
Kees Cook <keescook@chromium.org>.

 [ bp: Massage commit message, sync with the respective header in tools/
   and drop "we". ]

Fixes: 2b14449835 ("uprobes, mm, x86: Add the ability to install and remove uprobes breakpoints")
Reported-by: syzbot+9b64b619f10f19d19a7c@syzkaller.appspotmail.com
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/160697103739.3146288.7437620795200799020.stgit@devnote2

2020-12-06 09:58:13 +01:00

..

boot

x86/boot/compressed/64: Check SEV encryption in 64-bit boot-path

2020-10-29 18:06:52 +01:00

configs

Merge tag 'x86_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-09-20 15:06:43 -07:00

crypto

crypto: x86/poly1305 - add back a needed assignment

2020-10-24 09:38:32 +11:00

entry

Merge tag 'x86-urgent-2020-10-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-10-27 14:39:29 -07:00

events

perf/x86: fix sysfs type mismatches

2020-11-17 13:15:38 +01:00

hyperv

Merge tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

2020-11-05 11:32:03 -08:00

ia32

x86: remove address space overrides using set_fs()

2020-09-08 22:21:36 -04:00

include

x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes

2020-12-06 09:58:13 +01:00

kernel

x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes

2020-12-06 09:58:13 +01:00

kvm

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2020-11-15 09:57:58 -08:00

lib

x86/lib: Change .weak to SYM_FUNC_START_WEAK for arch/x86/lib/mem*_64.S

2020-11-04 12:30:20 +01:00

math-emu

treewide: Use fallthrough pseudo-keyword

2020-08-23 17:36:59 -05:00

mm

mm: fix phys_to_target_node() and memory_add_physaddr_to_nid() exports

2020-11-22 10:48:22 -08:00

net

bpf: x64: Do not emit sub/add 0, %rsp when !stack_depth

2020-09-29 16:47:39 -07:00

oprofile

…

pci

Merge tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2020-10-22 12:41:00 -07:00

platform

efi/x86: Free efi_pgd with free_pages()

2020-11-10 19:18:11 +01:00

power

Merge tag 'kbuild-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2020-08-09 14:10:26 -07:00

purgatory

treewide: Convert macro and uses of __section(foo) to __section("foo")

2020-10-25 14:51:49 -07:00

ras

…

realmode

x86/head/64: Don't call verify_cpu() on starting APs

2020-09-09 11:33:20 +02:00

tools

x86/insn: Make inat-tables.c suitable for pre-decompression code

2020-09-07 19:45:24 +02:00

um

arch/um: partially revert the conversion to __section() macro

2020-10-26 15:39:37 -07:00

video

…

xen

Merge tag 'for-linus-5.10b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2020-11-20 10:30:48 -08:00

.gitignore

…

Kbuild

…

Kconfig

Merge tag 'x86_seves_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-10-14 10:21:34 -07:00

Kconfig.assembler

…

Kconfig.cpu

…

Kconfig.debug

x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}()

2020-10-06 11:18:04 +02:00

Makefile

x86/build: Warn on orphan section placement

2020-09-03 10:28:36 +02:00

Makefile_32.cpu

…

Makefile.um

…