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ubuntucveUbuntu.comUB:CVE-2021-47056
HistoryFeb 29, 2024 - 12:00 a.m.

CVE-2021-47056

2024-02-2900:00:00
ubuntu.com
ubuntu.com
2
linux kernel
vulnerability
qat
adf_status_pf_running
adf_dev_init
adf_iov_putmsg
bug
kasan
mutex_lock
adf_vf2pf_shutdown
adf_dev_shutdown
adf_probe

6.6 Medium

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]

6.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.1%