CVE-2023-53056

/// Technical description

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

scsi: qla2xxx: Synchronize the IOCB count to be in order

A system hang was observed with the following call trace:

BUG: kernel NULL pointer dereference, address: 0000000000000000

PGD 0 P4D 0

Oops: 0000 [#1] PREEMPT SMP NOPTI

CPU: 15 PID: 86747 Comm: nvme Kdump: loaded Not tainted 6.2.0+ #1

Hardware name: Dell Inc. PowerEdge R6515/04F3CJ, BIOS 2.7.3 03/31/2022

RIP: 0010:__wake_up_common+0x55/0x190

Code: 41 f6 01 04 0f 85 b2 00 00 00 48 8b 43 08 4c 8d

40 e8 48 8d 43 08 48 89 04 24 48 89 c6\

49 8d 40 18 48 39 c6 0f 84 e9 00 00 00 <49> 8b 40 18 89 6c 24 14 31

ed 4c 8d 60 e8 41 8b 18 f6 c3 04 75 5d

RSP: 0018:ffffb05a82afbba0 EFLAGS: 00010082

RAX: 0000000000000000 RBX: ffff8f9b83a00018 RCX: 0000000000000000

RDX: 0000000000000001 RSI: ffff8f9b83a00020 RDI: ffff8f9b83a00018

RBP: 0000000000000001 R08: ffffffffffffffe8 R09: ffffb05a82afbbf8

R10: 70735f7472617473 R11: 5f30307832616c71 R12: 0000000000000001

R1

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References