CVE-2021-47203

scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()

State: Published
Severity: 8.8 High
Published: Apr 10, 2024
Updated: Aug 5, 2026
Reserved: Mar 25, 2024

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.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before ad4776b5eb2e58af1226847fcd3b4f6d051674ddAffected 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before ec70d80a8642900086447ba0cdc79e3f44d42e8fAffected 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before f05a0191b90156e539cccc189b9d87ca2a4d9305Affected 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before b291d147d0268e93ad866f8bc820ea14497abc9bAffected 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before 16bcbfb56d759c25665f786e33ec633b9508a08fAffected 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before c097bd5a59162156d9c2077a2f58732ffbaa9fcaAffected 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before 814d3610c4ce86e8cf285b2cdac0057a42e82de5Affected 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before 99154581b05c8fb22607afb7c3d66c1bace6aa5dAffected
LinuxLinux	2.6.36Affected before 2.6.36Not affected 4.4.293 through 4.4.Not affected 4.9.291 through 4.9.Not affected 4.14.256 through 4.14.Not affected 4.19.218 through 4.19.Not affected 5.4.162 through 5.4.Not affected 5.10.82 through 5.10.Not affected 5.15.5 through 5.15.*Not affected 5.16 and laterNot affected

Product

Versions

LinuxLinux

2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before ad4776b5eb2e58af1226847fcd3b4f6d051674ddAffected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before ec70d80a8642900086447ba0cdc79e3f44d42e8fAffected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before f05a0191b90156e539cccc189b9d87ca2a4d9305Affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before b291d147d0268e93ad866f8bc820ea14497abc9bAffected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before 16bcbfb56d759c25665f786e33ec633b9508a08fAffected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before c097bd5a59162156d9c2077a2f58732ffbaa9fcaAffected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before 814d3610c4ce86e8cf285b2cdac0057a42e82de5Affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 to before 99154581b05c8fb22607afb7c3d66c1bace6aa5dAffected

LinuxLinux

2.6.36Affected
before 2.6.36Not affected
4.4.293 through 4.4.*Not affected
4.9.291 through 4.9.*Not affected
4.14.256 through 4.14.*Not affected
4.19.218 through 4.19.*Not affected
5.4.162 through 5.4.*Not affected
5.10.82 through 5.10.*Not affected
5.15.5 through 5.15.*Not affected
5.16 and laterNot affected

References

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