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 :
Dec. 26, 2024, 7:52 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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information, practical solutions, and valuable tools related to
CVE-2021-47328.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2021-47328 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
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.
-
Initial Analysis by [email protected]
Dec. 26, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.19.198 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.134 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.52 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.13 up to (excluding) 5.13.4 Changed Reference Type https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 No Types Assigned https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 Patch Changed Reference Type https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 No Types Assigned https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 Patch Changed Reference Type https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 No Types Assigned https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 Patch Changed Reference Type https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 No Types Assigned https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 Patch Changed Reference Type https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 No Types Assigned https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 Patch Changed Reference Type https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 No Types Assigned https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 Patch Changed Reference Type https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 No Types Assigned https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 Patch Changed Reference Type https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 No Types Assigned https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 Patch Changed Reference Type https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 No Types Assigned https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 Patch Changed Reference Type https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 No Types Assigned https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 Patch Changed Reference Type https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 No Types Assigned https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 Patch Changed Reference Type https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 No Types Assigned https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 Added Reference https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 Added Reference https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 Added Reference https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 Added Reference https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 Added Reference https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 -
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.