CVE-2021-47188

Summary

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

scsi: ufs: core: Improve SCSI abort handling

The following has been observed on a test setup:

WARNING: CPU: 4 PID: 250 at drivers/scsi/ufs/ufshcd.c:2737 ufshcd_queuecommand+0x468/0x65c Call trace: ufshcd_queuecommand+0x468/0x65c scsi_send_eh_cmnd+0x224/0x6a0 scsi_eh_test_devices+0x248/0x418 scsi_eh_ready_devs+0xc34/0xe58 scsi_error_handler+0x204/0x80c kthread+0x150/0x1b4 ret_from_fork+0x10/0x30

That warning is triggered by the following statement:

WARN_ON(lrbp->cmd);

Fix this warning by clearing lrbp->cmd from the abort handler.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7a3e97b0dc4bbac2ba7803564ab0057722689921 < 9491bc16082d9a402c9099acbfffc89af6f9316faffected
LinuxLinux7a3e97b0dc4bbac2ba7803564ab0057722689921 < c36baca06efa833adaefba61f45fefdc49b6d070affected
LinuxLinux7a3e97b0dc4bbac2ba7803564ab0057722689921 < 3ff1f6b6ba6f97f50862aa50e79959cc8ddc2566affected
LinuxLinux3.4affected
LinuxLinux0 < 3.4unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.5 <= 5.15.*unaffected
LinuxLinux5.16 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References