CVE-2021-47056

Summary

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]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux25c6ffb249f612c56a48ce48a3887adf57b8f4bd < f4c4e07140687f42bfa40e091bb4a55d7960ce4daffected
LinuxLinux25c6ffb249f612c56a48ce48a3887adf57b8f4bd < 446045cf682af12d9294765f6c46084b374b5654affected
LinuxLinux25c6ffb249f612c56a48ce48a3887adf57b8f4bd < 09d16cee6285d37cc76311c29add6d97a7e4acdaaffected
LinuxLinux25c6ffb249f612c56a48ce48a3887adf57b8f4bd < 05ec8192ee4bfdf2a8894a68350dac9f1a155fa6affected
LinuxLinux25c6ffb249f612c56a48ce48a3887adf57b8f4bd < 1f50392650ae794a1aea41c213c6a3e1c824413caffected
LinuxLinux25c6ffb249f612c56a48ce48a3887adf57b8f4bd < 20fd40fc6f2c2b41dc6f637f88d494b14e9c21f1affected
LinuxLinux25c6ffb249f612c56a48ce48a3887adf57b8f4bd < 1ea500ce6f7c9106e4a561d28e69215f3d451818affected
LinuxLinux25c6ffb249f612c56a48ce48a3887adf57b8f4bd < 8609f5cfdc872fc3a462efa6a3eca5cb1e2f6446affected
LinuxLinux4.7affected
LinuxLinux0 < 4.7unaffected
LinuxLinux4.9.269 <= 4.9.*unaffected
LinuxLinux4.14.233 <= 4.14.*unaffected
LinuxLinux4.19.191 <= 4.19.*unaffected
LinuxLinux5.4.119 <= 5.4.*unaffected
LinuxLinux5.10.37 <= 5.10.*unaffected
LinuxLinux5.11.21 <= 5.11.*unaffected
LinuxLinux5.12.4 <= 5.12.*unaffected
LinuxLinux5.13 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References