Release Date: | 2024-08-17 |
In the Linux kernel, the following vulnerability has been resolved: block: initialize integrity buffer to zero before writing it to media Metadata added by bio_integrity_prep is using plain kmalloc, which leads to random kernel memory being written media. For PI metadata this is limited to the app tag that isn't used by kernel generated metadata, but for non-PI metadata the entire buffer leaks kernel memory. Fix this by adding the __GFP_ZERO flag to allocations for writes.
See more information about CVE-2024-43854 from MITRE CVE dictionary and NIST NVD
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 |
Platform | Errata | Release Date |
Oracle Linux version 7 (kernel-uek) | ELSA-2024-12813 | 2024-11-12 |
Oracle Linux version 8 (kernel) | ELSA-2024-8856 | 2024-11-05 |
Oracle Linux version 8 (kernel-uek) | ELSA-2024-12813 | 2024-11-12 |
Oracle Linux version 8 (kernel-uek) | ELSA-2024-12815 | 2024-11-11 |
Oracle Linux version 9 (kernel) | ELSA-2024-8617 | 2024-10-30 |
Oracle Linux version 9 (kernel-uek) | ELSA-2024-12815 | 2024-11-11 |
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