CVE-2021-46963

MEDIUM5.5

scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand()

Published Feb 27, 2024

Modified 10 months ago

Details

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

scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand()

RIP: 0010:kmem_cache_free+0xfa/0x1b0
Call Trace:
   qla2xxx_mqueuecommand+0x2b5/0x2c0 [qla2xxx]
   scsi_queue_rq+0x5e2/0xa40
   __blk_mq_try_issue_directly+0x128/0x1d0
   blk_mq_request_issue_directly+0x4e/0xb0

Fix incorrect call to free srb in qla2xxx_mqueuecommand(), as srb is now allocated by upper layers. This fixes smatch warning of srb unintended free.

References

https://git.kernel.org/stable/c/6641df81ab799f28a5d564f860233dd26cca0d93

https://git.kernel.org/stable/c/702cdaa2c6283c135ef16d52e0e4e3c1005aa538

https://git.kernel.org/stable/c/77509a238547863040a42d57c72403f7d4c89a8f

https://git.kernel.org/stable/c/80ef24175df2cba3860d0369d1c662b49ee2de56

https://git.kernel.org/stable/c/a73208e3244127ef9f2cdf24e4adb947aaa32053

https://git.kernel.org/stable/c/c5ab9b67d8b061de74e2ca51bf787ee599bd7f89

https://www.cve.org/CVERecord?id=CVE-2021-46963

CVSS Analysis

CVSS v3.1

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

5.5/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Ecosystems

Timeline

PublishedFeb 27, 2024

ModifiedMay 4, 2025

CVE-2021-46963 | Mondoo Vulnerability Intelligence