Vulnerability-Lookup

FKIE_CVE-2026-22984

Vulnerability from fkie_nvd - Published: 2026-01-23 16:15 - Updated: 2026-06-17 10:20

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/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 handle_auth_done() Perform an explicit bounds check on payload_len to avoid a possible out-of-bounds access in the callout. [ idryomov: changelog ]

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/194cfe2af4d2a1de599d39dad636b47c2f6c2c96	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2802ef3380fa8c4a08cda51ec1f085b1a712e9e2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2d653bb63d598ae4b096dd678744bdcc34ee89e8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/79fe3511db416d2f2edcfd93569807cb02736e5e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/818156caffbf55cb4d368f9c3cac64e458fb49c9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ef208ea331ef688729f64089b895ed1b49e842e3	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19

JSON

To clipboard

{
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          "programFiles": [
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    },
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  ],
  "id": "CVE-2026-22984",
  "lastModified": "2026-06-17T10:20:39.130",
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}

CVE-2026-22984 (GCVE-0-2026-22984)

Vulnerability from cvelistv5 – Published: 2026-01-23 15:24 – Updated: 2026-08-05 12:19

Title

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

Summary

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 20:34 UTC

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/194cfe2af4d2a1de5…
https://git.kernel.org/stable/c/79fe3511db416d2f2…
https://git.kernel.org/stable/c/ef208ea331ef68872…
https://git.kernel.org/stable/c/2802ef3380fa8c4a0…
https://git.kernel.org/stable/c/2d653bb63d598ae4b…
https://git.kernel.org/stable/c/818156caffbf55cb4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 194cfe2af4d2a1de599d39dad636b47c2f6c2c96 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 79fe3511db416d2f2edcfd93569807cb02736e5e (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < ef208ea331ef688729f64089b895ed1b49e842e3 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 2802ef3380fa8c4a08cda51ec1f085b1a712e9e2 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 2d653bb63d598ae4b096dd678744bdcc34ee89e8 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 818156caffbf55cb4d368f9c3cac64e458fb49c9 (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.161 , ≤ 6.1.* (semver) Unaffected: 6.6.121 , ≤ 6.6.* (semver) Unaffected: 6.12.66 , ≤ 6.12.* (semver) Unaffected: 6.18.6 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-22984",
                "options": [
                  {
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                  },
                  {
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                ],
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                "timestamp": "2026-06-16T20:34:59.073775Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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      }
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            {
              "lang": "en",
              "value": "AV:N - The vulnerable parser processes Ceph messenger v2 AUTH_DONE frames received over TCP from a remote Ceph monitor/OSD/MDS peer. A malicious or compromised network peer can supply the crafted frame during the connection/authentication handshake.\nAC:L - The attacker controls the frame tag, control-segment length, payload_len, and payload contents needed to reach the unchecked callout. No race or hard-to-influence system state is required.\nPR:N - The bug is reached before the peer has been authenticated by the client-side msgr2 handshake. The remote attacker does not need privileges on the victim system.\nUI:N - In a reasonable Ceph deployment, clients connect or reconnect to monitors, OSDs, and MDS daemons automatically as part of mounted filesystem or block-device operation. A malicious reachable peer can trigger the malformed AUTH_DONE response without further victim interaction.\nS:U - The impact is within the kernel/libceph client security authority on the same host. This does not cross a VM, IOMMU, or other separate security scope boundary.\nC:H - The missing bounds check lets a peer-controlled payload_len make auth callbacks treat memory beyond the received control buffer as valid input. This is an unbounded kernel out-of-bounds read, so confidentiality impact is High.\nI:H - Although described as an out-of-bounds read, the auth_x callbacks can decrypt and clear claimed reply data in place based on attacker-controlled lengths. With the required conservative scoring, this can plausibly become kernel memory corruption and is scored as High integrity impact.\nA:H - Reading or cryptographically processing beyond the allocated control buffer can fault, corrupt memory, or otherwise crash the kernel. The malformed handshake frame can be sent repeatedly by the malicious peer."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:19:55.781Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/194cfe2af4d2a1de599d39dad636b47c2f6c2c96"
        },
        {
          "url": "https://git.kernel.org/stable/c/79fe3511db416d2f2edcfd93569807cb02736e5e"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef208ea331ef688729f64089b895ed1b49e842e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/2802ef3380fa8c4a08cda51ec1f085b1a712e9e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d653bb63d598ae4b096dd678744bdcc34ee89e8"
        },
        {
          "url": "https://git.kernel.org/stable/c/818156caffbf55cb4d368f9c3cac64e458fb49c9"
        }
      ],
      "title": "libceph: prevent potential out-of-bounds reads in handle_auth_done()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-22984",
    "datePublished": "2026-01-23T15:24:06.245Z",
    "dateReserved": "2026-01-13T15:37:45.936Z",
    "dateUpdated": "2026-08-05T12:19:55.781Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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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.
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FKIE_CVE-2026-22984

CVE-2026-22984 (GCVE-0-2026-22984)

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