CVE-2021-46963: scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand()

Published Feb 27, 2024
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

scsi: qla2xxx: Fix crash in qla2xxxmqueuecommand()

RIP: 0010:kmemcachefree+0xfa/0x1b0 Call Trace: qla2xxxmqueuecommand+0x2b5/0x2c0 [qla2xxx] scsiqueuerq+0x5e2/0xa40 blkmqtryissuedirectly+0x128/0x1d0 blkmqrequestissuedirectly+0x4e/0xb0

Fix incorrect call to free srb in qla2xxxmqueuecommand(), as srb is now allocated by upper layers. This fixes smatch warning of srb unintended free.

Affected Software

5 affected components
Linux Linux kernel>=4.19.90<4.19.191
Linux Linux kernel>=5.4.4<5.4.118
Linux Linux kernel>=5.5<5.10.36
Linux Linux kernel>=5.11<5.11.20
Linux Linux kernel>=5.12<5.12.3

Event History

Feb 27, 2024
CVE Published
via MITRE·06:47 PM
Data Sourced
via MITRE·06:47 PM
DescriptionSeverity
Data Sourced
via NVD·07:04 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-46963?

CVE-2021-46963 has been rated as having a moderate severity due to the potential for crashes in affected systems.

2

Which Linux kernel versions are affected by CVE-2021-46963?

CVE-2021-46963 affects Linux kernel versions between 4.19.90 to 4.19.191, 5.4.4 to 5.4.118, and 5.5 to 5.10.36, along with versions from 5.11 to 5.11.20 and 5.12 up to 5.12.3.

3

How do I fix CVE-2021-46963?

To fix CVE-2021-46963, upgrade your Linux kernel to the latest stable version that is not affected by this vulnerability.

4

What type of attack does CVE-2021-46963 allow?

CVE-2021-46963 could potentially allow an attacker to trigger a system crash through the SCSI command processing.

5

What component of the Linux kernel does CVE-2021-46963 affect?

CVE-2021-46963 affects the SCSI subsystem, specifically related to the qla2xxx driver.

Company

Resources

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