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nvd416baaa9-dc9f-4396-8d5f-8c081fb06d67NVD:CVE-2021-47056
HistoryFeb 29, 2024 - 11:15 p.m.

CVE-2021-47056

2024-02-2923:15:07
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
linux kernel
vulnerability
crypto
adf_status_pf_running
adf_dev_init
mutex_lock

7.4 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.1%

In the Linux kernel, the following vulnerability has been resolved:

crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init

ADF_STATUS_PF_RUNNING is (only) used and checked by adf_vf2pf_shutdown()
before calling adf_iov_putmsg()->mutex_lock(vf2pf_lock), however the
vf2pf_lock is initialized in adf_dev_init(), which can fail and when it
fail, the vf2pf_lock is either not initialized or destroyed, a subsequent
use of vf2pf_lock will cause issue.
To fix this issue, only set this flag if adf_dev_init() returns 0.

[ 7.178404] BUG: KASAN: user-memory-access in __mutex_lock.isra.0+0x1ac/0x7c0
[ 7.180345] Call Trace:
[ 7.182576] mutex_lock+0xc9/0xd0
[ 7.183257] adf_iov_putmsg+0x118/0x1a0 [intel_qat]
[ 7.183541] adf_vf2pf_shutdown+0x4d/0x7b [intel_qat]
[ 7.183834] adf_dev_shutdown+0x172/0x2b0 [intel_qat]
[ 7.184127] adf_probe+0x5e9/0x600 [qat_dh895xccvf]

7.4 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.1%