Vladis Dronov 75718584cb ptp: free ptp device pin descriptors properly ...

There is a bug in ptp_clock_unregister(), where ptp_cleanup_pin_groups()
first frees ptp->pin_{,dev_}attr, but then posix_clock_unregister() needs
them to destroy a related sysfs device.

These functions can not be just swapped, as posix_clock_unregister() frees
ptp which is needed in the ptp_cleanup_pin_groups(). Fix this by calling
ptp_cleanup_pin_groups() in ptp_clock_release(), right before ptp is freed.

This makes this patch fix an UAF bug in a patch which fixes an UAF bug.

Reported-by: Antti Laakso <[email protected]>
Fixes: a33121e548 ("ptp: fix the race between the release of ptp_clock and cdev")
Link: https://lore.kernel.org/netdev/[email protected]/
Signed-off-by: Vladis Dronov <[email protected]>
Acked-by: Richard Cochran <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

2020-01-14 10:58:57 -08:00

..

idt8a340_reg.h

ptp: Add a ptp clock driver for IDT ClockMatrix.

2019-11-03 17:35:40 -08:00

Kconfig

ptp: clockmatrix: add I2C dependency

2019-12-13 15:42:09 -08:00

Makefile

ptp: Add a ptp clock driver for IDT ClockMatrix.

2019-11-03 17:35:40 -08:00

ptp_chardev.c

ptp: Introduce strict checking of external time stamp options.

2019-11-15 12:48:32 -08:00

ptp_clock.c

ptp: free ptp device pin descriptors properly

2020-01-14 10:58:57 -08:00

ptp_clockmatrix.c

ptp: ptp_clockmatrix: Fix missing unlock on error in idtcm_probe()

2019-11-06 21:19:59 -08:00

ptp_clockmatrix.h

ptp: Add a ptp clock driver for IDT ClockMatrix.

2019-11-03 17:35:40 -08:00

ptp_dte.c

ptp: ptp_dte: use devm_platform_ioremap_resource() to simplify code

2019-10-10 16:21:13 -07:00

ptp_ixp46x.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61

2019-05-24 17:36:45 +02:00

ptp_kvm.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30 11:26:37 -07:00

ptp_pch.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167

2019-05-30 11:26:39 -07:00

ptp_private.h

ptp: fix the race between the release of ptp_clock and cdev

2019-12-30 20:19:27 -08:00

ptp_qoriq_debugfs.c

ptp_qoriq: add little enadian support

2019-02-12 12:58:48 -05:00

ptp_qoriq.c

ptp_qoriq: Initialize the registers' spinlock before calling ptp_qoriq_settime

2019-10-02 12:20:38 -04:00

ptp_sysfs.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61

2019-05-24 17:36:45 +02:00