Vulnerability-Lookup

FKIE_CVE-2026-43406

Vulnerability from fkie_nvd - Published: 2026-05-08 15:16 - Updated: 2026-05-21 19:09

Severity

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: libceph: prevent potential out-of-bounds reads in process_message_header() If the message frame is (maliciously) corrupted in a way that the length of the control segment ends up being less than the size of the message header or a different frame is made to look like a message frame, out-of-bounds reads may ensue in process_message_header(). Perform an explicit bounds check before decoding the message header.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

{
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    }
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  "id": "CVE-2026-43406",
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          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
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          "lang": "en",
          "value": "CWE-125"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-43406 (GCVE-0-2026-43406)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-11 22:23

Title

libceph: prevent potential out-of-bounds reads in process_message_header()

Summary

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/76ccf21a12c5f6d67…
https://git.kernel.org/stable/c/75582aaa580c11aed…
https://git.kernel.org/stable/c/50156622eb0888e62…
https://git.kernel.org/stable/c/dbd857a9e1e33ea71…
https://git.kernel.org/stable/c/69fe5af33fa3806f3…
https://git.kernel.org/stable/c/035867ae6f18df0ae…
https://git.kernel.org/stable/c/69fb5d91bba44ecf7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 76ccf21a12c5f6d6790bc32c7da82446d877b2f4 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 75582aaa580c11aed4c7731cad6b068b700e7efb (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 50156622eb0888e62541d715a98584480a1bc7cb (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < dbd857a9e1e33ea71eaf3e211877027e533770d1 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 69fe5af33fa3806f398d21c081d73c66e5523bc2 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 035867ae6f18df0aeedb2a57a5b74091bd4e3fe8 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 69fb5d91bba44ecf7eb80530b85fa4fb028921d5 (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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          "programFiles": [
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}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-43406

CVE-2026-43406 (GCVE-0-2026-43406)

Tags

Sightings

Nomenclature