CVE-2024-43854 (GCVE-0-2024-43854)
Vulnerability from cvelistv5 – Published: 2024-08-17 09:22 – Updated: 2026-05-11 20:31
VLAI
EPSS
VEX
Title
block: initialize integrity buffer to zero before writing it to media
Summary
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.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:07 UTC
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
7ba1ba12eeef0aa7113beb16410ef8b7c748e18b , < 9f4af4cf08f9a0329ade3d938f55d2220c40d0a6
(git)
Affected: 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b , < 129f95948a96105c1fad8e612c9097763e88ac5f (git) Affected: 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b , < 3fd11fe4f20756b4c0847f755a64cd96f8c6a005 (git) Affected: 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b , < cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 (git) Affected: 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b , < d418313bd8f55c079a7da12651951b489a638ac1 (git) Affected: 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b , < 23a19655fb56f241e592041156dfb1c6d04da644 (git) Affected: 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b , < ebc0e91ba76dc6544fff9f5b66408b1982806a00 (git) Affected: 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b , < 899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.27
Unaffected: 0 , < 2.6.27 (semver) Unaffected: 4.19.322 , ≤ 4.19.* (semver) Unaffected: 5.4.284 , ≤ 5.4.* (semver) Unaffected: 5.10.226 , ≤ 5.10.* (semver) Unaffected: 5.15.165 , ≤ 5.15.* (semver) Unaffected: 6.1.103 , ≤ 6.1.* (semver) Unaffected: 6.6.44 , ≤ 6.6.* (semver) Unaffected: 6.10.3 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix) |
guessed |
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-401"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T08:04:01+00:00",
"cve": "CVE-2024-43854",
"id": "CVE-2024-43854",
"initial_release_date": "2024-08-17T00:00:00+00:00",
"product_status:fixed": "943",
"product_status:known_affected": "64",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: block: initialize integrity buffer to zero before writing it to media",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-43854.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T22:05:51.729Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-43854",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T16:07:14.517245Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-09-11T12:42:22.896Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"block/bio-integrity.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "9f4af4cf08f9a0329ade3d938f55d2220c40d0a6",
"status": "affected",
"version": "7ba1ba12eeef0aa7113beb16410ef8b7c748e18b",
"versionType": "git"
},
{
"lessThan": "129f95948a96105c1fad8e612c9097763e88ac5f",
"status": "affected",
"version": "7ba1ba12eeef0aa7113beb16410ef8b7c748e18b",
"versionType": "git"
},
{
"lessThan": "3fd11fe4f20756b4c0847f755a64cd96f8c6a005",
"status": "affected",
"version": "7ba1ba12eeef0aa7113beb16410ef8b7c748e18b",
"versionType": "git"
},
{
"lessThan": "cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2",
"status": "affected",
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},
{
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"status": "affected",
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{
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"status": "affected",
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},
{
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"status": "affected",
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},
{
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"status": "affected",
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}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.27"
},
{
"lessThan": "2.6.27",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.322",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.4.284",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.226",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.165",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.103",
"versionType": "semver"
},
{
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"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.10.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
{
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"versionStartIncluding": "2.6.27",
"vulnerable": true
},
{
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},
{
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},
{
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},
{
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},
{
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},
{
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},
{
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"versionStartIncluding": "2.6.27",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: initialize integrity buffer to zero before writing it to media\n\nMetadata added by bio_integrity_prep is using plain kmalloc, which leads\nto random kernel memory being written media. For PI metadata this is\nlimited to the app tag that isn\u0027t used by kernel generated metadata,\nbut for non-PI metadata the entire buffer leaks kernel memory.\n\nFix this by adding the __GFP_ZERO flag to allocations for writes."
}
],
"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
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{
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},
{
"url": "https://git.kernel.org/stable/c/129f95948a96105c1fad8e612c9097763e88ac5f"
},
{
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},
{
"url": "https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2"
},
{
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},
{
"url": "https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644"
},
{
"url": "https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00"
},
{
"url": "https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f"
}
],
"title": "block: initialize integrity buffer to zero before writing it to media",
"x_generator": {
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}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2024-43854",
"datePublished": "2024-08-17T09:22:11.297Z",
"dateReserved": "2024-08-17T09:11:59.278Z",
"dateUpdated": "2026-05-11T20:31:06.290Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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