https://github.com/torvalds/linux
Revision d88d59b64ca35abae208e2781fdb45e69cbed56c authored by Thomas Gleixner on 19 August 2020, 19:44:39 UTC, committed by Thomas Gleixner on 21 August 2020, 14:17:29 UTC
The transcript of the x86 entry code to the generic version failed to
reload the syscall number from ptregs after ptrace and seccomp have run,
which both can modify the syscall number in ptregs. It returns the original
syscall number instead which is obviously not the right thing to do.
Reload the syscall number to fix that.
Fixes: 142781e108b1 ("entry: Provide generic syscall entry functionality")
Reported-by: Kyle Huey <me@kylehuey.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Kyle Huey <me@kylehuey.com>
Tested-by: Kees Cook <keescook@chromium.org>
Acked-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/87blj6ifo8.fsf@nanos.tec.linutronix.de
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Tip revision: d88d59b64ca35abae208e2781fdb45e69cbed56c authored by Thomas Gleixner on 19 August 2020, 19:44:39 UTC
core/entry: Respect syscall number rewrites
core/entry: Respect syscall number rewrites
Tip revision: d88d59b
| File | Mode | Size |
|---|---|---|
| auxdisplay | ||
| binderfs | ||
| bpf | ||
| configfs | ||
| connector | ||
| ftrace | ||
| hidraw | ||
| hw_breakpoint | ||
| kdb | ||
| kfifo | ||
| kobject | ||
| kprobes | ||
| livepatch | ||
| mei | ||
| mic | ||
| pidfd | ||
| pktgen | ||
| qmi | ||
| rpmsg | ||
| seccomp | ||
| timers | ||
| trace_events | ||
| trace_printk | ||
| uhid | ||
| v4l | ||
| vfio-mdev | ||
| vfs | ||
| watch_queue | ||
| watchdog | ||
| Kconfig | -rw-r--r-- | 6.7 KB |
| Makefile | -rw-r--r-- | 1.2 KB |
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