CVE-2021-47328
Linux kernel Iscsi Use After Free 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.
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
May 21, 2024, 4:54 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2021-47328
.
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CVE-2021-47328
vulnerability anywhere in the article.
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CVE-2021-47328
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47328
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47328
weaknesses.