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CVE-2022-49044 (GCVE-0-2022-49044)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-08-12 23:57
VLAI
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)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted 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 Create a notification for this product.
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 Create a notification for this product.
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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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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.

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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.
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  • 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.


Detection rules are retrieved from Rulezet.


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