CVE-2021-47056

crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init

Description

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]

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/f4c4e07140687f42bfa40e091bb4a55d7960ce4d patch
https://git.kernel.org/stable/c/446045cf682af12d9294765f6c46084b374b5654 patch
https://git.kernel.org/stable/c/09d16cee6285d37cc76311c29add6d97a7e4acda patch
https://git.kernel.org/stable/c/05ec8192ee4bfdf2a8894a68350dac9f1a155fa6 patch
https://git.kernel.org/stable/c/1f50392650ae794a1aea41c213c6a3e1c824413c patch
https://git.kernel.org/stable/c/20fd40fc6f2c2b41dc6f637f88d494b14e9c21f1 patch
https://git.kernel.org/stable/c/1ea500ce6f7c9106e4a561d28e69215f3d451818 patch
https://git.kernel.org/stable/c/8609f5cfdc872fc3a462efa6a3eca5cb1e2f6446 patch

Frequently Asked Questions

What is the severity of CVE-2021-47056?
CVE-2021-47056 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47056?
To fix CVE-2021-47056, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47056 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47056 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47056?
CVE-2021-47056 affects Linux Linux, Linux Linux.
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