CVE-2024-43854
Linux Kernel Block Metadata Memory Leak Disclosure
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.
INFO
Published Date :
Aug. 17, 2024, 10:15 a.m.
Last Modified :
Sept. 12, 2024, 12:15 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-43854.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-43854 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-43854 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 12, 2024
Action Type Old Value New Value Added Reference kernel.org https://git.kernel.org/stable/c/9f4af4cf08f9a0329ade3d938f55d2220c40d0a6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/129f95948a96105c1fad8e612c9097763e88ac5f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/3fd11fe4f20756b4c0847f755a64cd96f8c6a005 [No types assigned] -
Initial Analysis by [email protected]
Aug. 22, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644 No Types Assigned https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644 Patch Changed Reference Type https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f No Types Assigned https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f Patch Changed Reference Type https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 No Types Assigned https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 Patch Changed Reference Type https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1 No Types Assigned https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1 Patch Changed Reference Type https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00 No Types Assigned https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00 Patch Added CWE NIST CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.27 up to (excluding) 5.15.165 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.103 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.44 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.3 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 19, 2024
Action Type Old Value New Value Added Reference kernel.org https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 [No types assigned] -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2024
Action Type Old Value New Value 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. Added Reference kernel.org https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-43854 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-43854
weaknesses.