CVE-2024-27079

CVE Details

Release Date:

2024-05-01

Description

In the Linux kernel, the following vulnerability has been resolved:\niommu/vt-d: Fix NULL domain on device release\nIn the kdump kernel, the IOMMU operates in deferred_attach mode. In this\nmode, info->domain may not yet be assigned by the time the release_device\nfunction is called. It leads to the following crash in the crash kernel:\nBUG: kernel NULL pointer dereference, address: 000000000000003c\n...\nRIP: 0010:do_raw_spin_lock+0xa/0xa0\n...\n_raw_spin_lock_irqsave+0x1b/0x30\nintel_iommu_release_device+0x96/0x170\niommu_deinit_device+0x39/0xf0\n__iommu_group_remove_device+0xa0/0xd0\niommu_bus_notifier+0x55/0xb0\nnotifier_call_chain+0x5a/0xd0\nblocking_notifier_call_chain+0x41/0x60\nbus_notify+0x34/0x50\ndevice_del+0x269/0x3d0\npci_remove_bus_device+0x77/0x100\np2sb_bar+0xae/0x1d0\n...\ni801_probe+0x423/0x740\nUse the release_domain mechanism to fix it. The scalable mode context\nentry which is not part of release domain should be cleared in\nrelease_device().

See more information about CVE-2024-27079 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	5.5	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14