AZL-57758
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-57758.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-57758
- Upstream
- Published
- 2024-05-01T13:15:51Z
- Modified
- 2026-04-01T05:19:12.469569Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2024-27079 affecting package kernel 6.6.126.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iommu/vt-d: Fix NULL domain on device release
In the kdump kernel, the IOMMU operates in deferredattach mode. In this mode, info->domain may not yet be assigned by the time the releasedevice function is called. It leads to the following crash in the crash kernel:
BUG: kernel NULL pointer dereference, address: 000000000000003c ... RIP: 0010:do_raw_spin_lock+0xa/0xa0 ... _raw_spin_lock_irqsave+0x1b/0x30 intel_iommu_release_device+0x96/0x170 iommu_deinit_device+0x39/0xf0 __iommu_group_remove_device+0xa0/0xd0 iommu_bus_notifier+0x55/0xb0 notifier_call_chain+0x5a/0xd0 blocking_notifier_call_chain+0x41/0x60 bus_notify+0x34/0x50 device_del+0x269/0x3d0 pci_remove_bus_device+0x77/0x100 p2sb_bar+0xae/0x1d0 ... i801_probe+0x423/0x740Use the releasedomain mechanism to fix it. The scalable mode context entry which is not part of release domain should be cleared in releasedevice().
- References