linux-stable/drivers/crypto
Damian Muszynski d03092550f crypto: qat - resolve race condition during AER recovery
[ Upstream commit 7d42e09760 ]

During the PCI AER system's error recovery process, the kernel driver
may encounter a race condition with freeing the reset_data structure's
memory. If the device restart will take more than 10 seconds the function
scheduling that restart will exit due to a timeout, and the reset_data
structure will be freed. However, this data structure is used for
completion notification after the restart is completed, which leads
to a UAF bug.

This results in a KFENCE bug notice.

  BUG: KFENCE: use-after-free read in adf_device_reset_worker+0x38/0xa0 [intel_qat]
  Use-after-free read at 0x00000000bc56fddf (in kfence-#142):
  adf_device_reset_worker+0x38/0xa0 [intel_qat]
  process_one_work+0x173/0x340

To resolve this race condition, the memory associated to the container
of the work_struct is freed on the worker if the timeout expired,
otherwise on the function that schedules the worker.
The timeout detection can be done by checking if the caller is
still waiting for completion or not by using completion_done() function.

Fixes: d8cba25d2c ("crypto: qat - Intel(R) QAT driver framework")
Cc: <stable@vger.kernel.org>
Signed-off-by: Damian Muszynski <damian.muszynski@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-13 12:58:05 +02:00
..
allwinner
amcc
amlogic
axis
bcm
caam crypto: caam/jr - fix Chacha20 + Poly1305 self test failure 2023-11-20 11:06:50 +01:00
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ccp crypto: ccp - Fix null pointer dereference in __sev_platform_shutdown_locked 2024-02-23 08:42:28 +01:00
ccree
chelsio
hisilicon crypto: hisilicon/hpre - Fix a erroneous check after snprintf() 2023-11-20 11:06:50 +01:00
inside-secure
marvell
mediatek
nx
qat crypto: qat - resolve race condition during AER recovery 2024-04-13 12:58:05 +02:00
qce
rockchip
stm32 crypto: stm32/crc32 - fix parsing list of devices 2024-02-23 08:42:04 +01:00
ux500
virtio crypto: virtio/akcipher - Fix stack overflow on memcpy 2024-03-06 14:37:48 +00:00
vmx
xilinx crypto: xilinx - call finalize with bh disabled 2024-03-26 18:21:56 -04:00
atmel-aes-regs.h
atmel-aes.c
atmel-authenc.h
atmel-ecc.c
atmel-i2c.c
atmel-i2c.h
atmel-sha-regs.h
atmel-sha.c
atmel-sha204a.c
atmel-tdes-regs.h
atmel-tdes.c
exynos-rng.c
geode-aes.c
geode-aes.h
hifn_795x.c
img-hash.c
ixp4xx_crypto.c
Kconfig
Makefile
mxs-dcp.c
n2_asm.S
n2_core.c
n2_core.h
omap-aes-gcm.c
omap-aes.c
omap-aes.h
omap-crypto.c
omap-crypto.h
omap-des.c
omap-sham.c
padlock-aes.c
padlock-sha.c
picoxcell_crypto.c
picoxcell_crypto_regs.h
qcom-rng.c
s5p-sss.c
sa2ul.c crypto: sa2ul - Return crypto_aead_setkey to transfer the error 2024-01-25 14:37:41 -08:00
sa2ul.h
sahara.c crypto: sahara - do not resize req->src when doing hash operations 2024-01-25 14:37:43 -08:00
talitos.c
talitos.h