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linux/drivers/atm
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Duoming Zhou 3f4093e2bf atm: idt77252: fix use-after-free bugs caused by tst_timer 
There are use-after-free bugs caused by tst_timer. The root cause
is that there are no functions to stop tst_timer in idt77252_exit().
One of the possible race conditions is shown below:

    (thread 1)          |        (thread 2)
                        |  idt77252_init_one
                        |    init_card
                        |      fill_tst
                        |        mod_timer(&card->tst_timer, ...)
idt77252_exit           |  (wait a time)
                        |  tst_timer
                        |
                        |    ...
  kfree(card) // FREE   |
                        |    card->soft_tst[e] // USE

The idt77252_dev is deallocated in idt77252_exit() and used in
timer handler.

This patch adds del_timer_sync() in idt77252_exit() in order that
the timer handler could be stopped before the idt77252_dev is
deallocated.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://lore.kernel.org/r/20220805070008.18007-1-duoming@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-08 20:51:59 -07:00
..
.gitignore
adummy.c
atmtcp.c
eni.c atm: eni: Add check for dma_map_single 2022-03-15 11:01:52 +00:00
eni.h
fore200e.c atm: fore200e: Fix fall-through warnings for Clang 2021-05-17 18:50:49 -05:00
fore200e.h
he.c atm: he: Use the bitmap API to allocate bitmaps 2022-07-11 19:49:53 -07:00
he.h
idt77105.c atm: idt77252: fix null-ptr-dereference 2021-03-08 15:16:30 -08:00
idt77105.h
idt77252_tables.h
idt77252.c atm: idt77252: fix use-after-free bugs caused by tst_timer 2022-08-08 20:51:59 -07:00
idt77252.h atm: idt77252: fix build broken on amd64 2021-02-15 12:36:27 -08:00
iphase.c atm: iphase: Fix typo in comment 2022-06-17 20:17:18 -07:00
iphase.h atm: Replace custom isprint() with generic analogue 2021-05-10 14:51:01 -07:00
Kconfig net: atm: remove support for ZeitNet ZN122x ATM devices 2022-04-27 12:22:56 +01:00
lanai.c atm: lanai: dont run lanai_dev_close if not open 2021-03-01 13:18:54 -08:00
Makefile net: atm: remove support for ZeitNet ZN122x ATM devices 2022-04-27 12:22:56 +01:00
midway.h
nicstar.c atm: nicstar: Use kcalloc() to simplify code 2022-02-19 16:38:12 +00:00
nicstar.h
nicstarmac.c net: remove comments that mention obsolete __SLOW_DOWN_IO 2022-04-26 17:09:24 -07:00
nicstarmac.copyright
solos-attrlist.c
solos-pci.c
suni.c atm: delete include/linux/atm_suni.h 2021-03-15 12:43:10 -07:00
suni.h
tonga.h
zeprom.h atm: Fix typo 2021-05-21 13:55:32 -07:00