CVE-2024-42289

/// Technical description

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

scsi: qla2xxx: During vport delete send async logout explicitly

During vport delete, it is observed that during unload we hit a crash

because of stale entries in outstanding command array. For all these stale

I/O entries, eh_abort was issued and aborted (fast_fail_io = 2009h) but

I/Os could not complete while vport delete is in process of deleting.

BUG: kernel NULL pointer dereference, address: 000000000000001c

#PF: supervisor read access in kernel mode

#PF: error_code(0x0000) - not-present page

PGD 0 P4D 0

Oops: 0000 [#1] PREEMPT SMP NOPTI

Workqueue: qla2xxx_wq qla_do_work [qla2xxx]

RIP: 0010:dma_direct_unmap_sg+0x51/0x1e0

RSP: 0018:ffffa1e1e150fc68 EFLAGS: 00010046

RAX: 0000000000000000 RBX: 0000000000000021 RCX: 0000000000000001

RDX: 0000000000000021 RSI: 0000000000000000 RDI: ffff8ce208a7a0d0

RBP: ffff8ce208a7a0d0 R08: 0000000000000000 R09: ffff8ce378aac9c8

R10: ffff8ce378aac8a0 R11: fff

/// 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