CVE-2024-43854 - CVE House
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Status published Unknown CVE-2024-43854

block: initialize integrity buffer to zero before writing it to media

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
7ba1ba12eeef0aa7113beb16410ef8b7c748e18b, 2.6.27, 0, 4.19.322, 5.4.284, 5.10.226, 5.15.165, 6.1.103, 6.6.44, 6.10.3, 6.11

Timeline

Official Publish: August 17th, 2024
Last Modified: May 11th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.