Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: Fix conn use after free during resets If we haven't done a unbind target call we can race where iscsi_conn_teardown wakes up the EH thread and then frees the conn while those threads are still accessing the conn ehwait. We can only do one TMF per session so this just moves the TMF fields from the conn to the session. We can then rely on the iscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session call to remove the target and it's devices, and know after that point there is no device or scsi-ml callout trying to access the session.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.19.198 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250Patch
- https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11Patch
- https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00Patch
- https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506Patch
- https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1Patch
- https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9Patch
- https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250Patch
- https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11Patch
- https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00Patch
- https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506Patch
- https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1Patch
- https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9Patch
FAQ
What is CVE-2021-47328?
CVE-2021-47328 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: Fix conn use after free during resets If we haven't done a unbind target call we can race where iscsi_conn_teardown w...
How severe is CVE-2021-47328?
CVE-2021-47328 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-47328?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.