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.
History

Wed, 04 Dec 2024 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.2
cpe:/a:redhat:rhel_eus:9.2::nfv
Vendors & Products Redhat rhel Eus

Wed, 06 Nov 2024 02:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8::nfv
cpe:/o:redhat:enterprise_linux:8

Wed, 30 Oct 2024 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux

Thu, 12 Sep 2024 12:00:00 +0000


Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 22 Aug 2024 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-401
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Mon, 19 Aug 2024 19:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Mon, 19 Aug 2024 04:45:00 +0000


Sat, 17 Aug 2024 09:30:00 +0000

Type Values Removed Values Added
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.
Title block: initialize integrity buffer to zero before writing it to media
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-08-17T09:22:11.297Z

Updated: 2024-12-19T09:17:12.189Z

Reserved: 2024-08-17T09:11:59.278Z

Link: CVE-2024-43854

cve-icon Vulnrichment

Updated: 2024-09-11T12:42:22.896Z

cve-icon NVD

Status : Modified

Published: 2024-08-17T10:15:10.447

Modified: 2024-09-12T12:15:49.423

Link: CVE-2024-43854

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-08-17T00:00:00Z

Links: CVE-2024-43854 - Bugzilla