CVE-2024-40945

CVE Details

Release Date:2024-07-12

Description


In the Linux kernel, the following vulnerability has been resolved:\niommu: Return right value in iommu_sva_bind_device()\niommu_sva_bind_device() should return either a sva bond handle or an\nERR_PTR value in error cases. Existing drivers (idxd and uacce) only\ncheck the return value with IS_ERR(). This could potentially lead to\na kernel NULL pointer dereference issue if the function returns NULL\ninstead of an error pointer.\nIn reality, this doesn't cause any problems because iommu_sva_bind_device()\nonly returns NULL when the kernel is not configured with CONFIG_IOMMU_SVA.\nIn this case, iommu_dev_enable_feature(dev, IOMMU_DEV_FEAT_SVA) will\nreturn an error, and the device drivers won't call iommu_sva_bind_device()\nat all.

See more information about CVE-2024-40945 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: 4.4 CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector: Local network Attack Complexity: Low
Privileges Required: High User Interaction: None
Scope: Unchanged Confidentiality Impact: None
Integrity Impact: None Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 7 (kernel-uek)ELSA-2024-126102024-09-10
Oracle Linux version 7 (kernel-uek-container)ELSA-2024-126122024-09-11
Oracle Linux version 8 (kernel-uek)ELSA-2024-126102024-09-10
Oracle Linux version 8 (kernel-uek)ELSA-2024-126182024-09-12
Oracle Linux version 8 (kernel-uek-container)ELSA-2024-126122024-09-11
Oracle Linux version 9 (kernel-uek)ELSA-2024-126182024-09-12


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