CVE-2022-49044 (GCVE-0-2022-49044)
Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-08-12 23:57
VLAI
EPSS
VEX
Title
dm integrity: fix memory corruption when tag_size is less than digest size
Summary
In the Linux kernel, the following vulnerability has been resolved:
dm integrity: fix memory corruption when tag_size is less than digest size
It is possible to set up dm-integrity in such a way that the
"tag_size" parameter is less than the actual digest size. In this
situation, a part of the digest beyond tag_size is ignored.
In this case, dm-integrity would write beyond the end of the
ic->recalc_tags array and corrupt memory. The corruption happened in
integrity_recalc->integrity_sector_checksum->crypto_shash_final.
Fix this corruption by increasing the tags array so that it has enough
padding at the end to accomodate the loop in integrity_recalc() being
able to write a full digest size for the last member of the tags
array.
Severity
7.8 (High)
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
a3fcf7253139609bf9ff901fbf955fba047e75dd , < 6a95d91c0b315c965198f6ab7dec7c94129e17e0
(git)
Affected: a3fcf7253139609bf9ff901fbf955fba047e75dd , < 7f84c937222944c03f4615ca4742df6bed0e5adf (git) Affected: a3fcf7253139609bf9ff901fbf955fba047e75dd , < cd02b2687d66f0a8e716384de4b9a0671331f1dc (git) Affected: a3fcf7253139609bf9ff901fbf955fba047e75dd , < 6b4bf97587ef6c1927a78934b700204920655123 (git) Affected: a3fcf7253139609bf9ff901fbf955fba047e75dd , < 4d485cf9b609709e45d5113e6e2b1b01254b2fe9 (git) Affected: a3fcf7253139609bf9ff901fbf955fba047e75dd , < 08c1af8f1c13bbf210f1760132f4df24d0ed46d6 (git) |
guessed | |
| Linux | Linux |
Affected:
4.19
Unaffected: 0 , < 4.19 (semver) Unaffected: 4.19.240 , ≤ 4.19.* (semver) Unaffected: 5.4.190 , ≤ 5.4.* (semver) Unaffected: 5.10.112 , ≤ 5.10.* (semver) Unaffected: 5.15.35 , ≤ 5.15.* (semver) Unaffected: 5.17.4 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix) |
guessed |
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},
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},
{
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}
]
}
],
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm integrity: fix memory corruption when tag_size is less than digest size\n\nIt is possible to set up dm-integrity in such a way that the\n\"tag_size\" parameter is less than the actual digest size. In this\nsituation, a part of the digest beyond tag_size is ignored.\n\nIn this case, dm-integrity would write beyond the end of the\nic-\u003erecalc_tags array and corrupt memory. The corruption happened in\nintegrity_recalc-\u003eintegrity_sector_checksum-\u003ecrypto_shash_final.\n\nFix this corruption by increasing the tags array so that it has enough\npadding at the end to accomodate the loop in integrity_recalc() being\nable to write a full digest size for the last member of the tags\narray."
}
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"url": "https://git.kernel.org/stable/c/08c1af8f1c13bbf210f1760132f4df24d0ed46d6"
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"title": "dm integrity: fix memory corruption when tag_size is less than digest size",
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The corruption happened in\\nintegrity_recalc-\u003eintegrity_sector_checksum-\u003ecrypto_shash_final.\\n\\nFix this corruption by increasing the tags array so that it has enough\\npadding at the end to accomodate the loop in integrity_recalc() being\\nable to write a full digest size for the last member of the tags\\narray.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dm integrity: fix memory corrupts when tag_size is less than digest size Es posible configurar dm-integrity de tal manera que el par\u00e1metro \\\"tag_size\\\" sea menor que el tama\u00f1o real del resumen. En esta situaci\u00f3n, se ignora una parte del resumen m\u00e1s all\u00e1 de tag_size. En este caso, dm-integrity escribir\u00eda m\u00e1s all\u00e1 del final de la matriz ic-\u0026gt;recalc_tags y da\u00f1ar\u00eda la memoria. La corrupci\u00f3n ocurri\u00f3 en integrity_recalc-\u0026gt;integrity_sector_checksum-\u0026gt;crypto_shash_final. Corrija esta corrupci\u00f3n aumentando la matriz tags para que tenga suficiente relleno al final para acomodar el bucle en integrity_recalc() pudiendo escribir un tama\u00f1o de resumen completo para el \u00faltimo miembro de la matriz 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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-29T22:49:33+00:00",
"cve": "CVE-2022-49044",
"id": "CVE-2022-49044",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:fixed": "415",
"product_status:known_affected": "38",
"product_status:known_not_affected": "127",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: dm integrity: fix memory corruption when tag_size is less than digest size",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49044.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T02:31:32Z",
"cve": "CVE-2022-49044",
"id": "CVE-2022-49044",
"initial_release_date": "2025-02-27T03:13:09Z",
"product_status:known_affected": "409",
"product_status:known_not_affected": "278",
"product_status:recommended": "359",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-49044",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49044.json",
"version": "57"
}
}
}
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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.
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.
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