CVE-2021-47203
"LPFC SCSI Driver List Corruption Vulnerability"
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq() When parsing the txq list in lpfc_drain_txq(), the driver attempts to pass the requests to the adapter. If such an attempt fails, a local "fail_msg" string is set and a log message output. The job is then added to a completions list for cancellation. Processing of any further jobs from the txq list continues, but since "fail_msg" remains set, jobs are added to the completions list regardless of whether a wqe was passed to the adapter. If successfully added to txcmplq, jobs are added to both lists resulting in list corruption. Fix by clearing the fail_msg string after adding a job to the completions list. This stops the subsequent jobs from being added to the completions list unless they had an appropriate failure.
INFO
Published Date :
April 10, 2024, 7:15 p.m.
Last Modified :
April 10, 2024, 7:49 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-2021-47203
.
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CVE-2021-47203
vulnerability anywhere in the article.
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CVE-2021-47203
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 Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 10, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq() When parsing the txq list in lpfc_drain_txq(), the driver attempts to pass the requests to the adapter. If such an attempt fails, a local "fail_msg" string is set and a log message output. The job is then added to a completions list for cancellation. Processing of any further jobs from the txq list continues, but since "fail_msg" remains set, jobs are added to the completions list regardless of whether a wqe was passed to the adapter. If successfully added to txcmplq, jobs are added to both lists resulting in list corruption. Fix by clearing the fail_msg string after adding a job to the completions list. This stops the subsequent jobs from being added to the completions list unless they had an appropriate failure. Added Reference kernel.org https://git.kernel.org/stable/c/ad4776b5eb2e58af1226847fcd3b4f6d051674dd [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ec70d80a8642900086447ba0cdc79e3f44d42e8f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f05a0191b90156e539cccc189b9d87ca2a4d9305 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b291d147d0268e93ad866f8bc820ea14497abc9b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/16bcbfb56d759c25665f786e33ec633b9508a08f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c097bd5a59162156d9c2077a2f58732ffbaa9fca [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/814d3610c4ce86e8cf285b2cdac0057a42e82de5 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/99154581b05c8fb22607afb7c3d66c1bace6aa5d [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-2021-47203
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-2021-47203
weaknesses.