CVE-2026-68157Network attack vector

Host crash via missing CRUSH type metadata

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL pointer dereference in Linux kernel libceph allows remote attackers to crash affected Ceph client hosts via a malformed CRUSH map. In net/ceph/osdmap.c, get_immediate_parent() passes a NULL type-name pointer to strcmp() when a named parent bucket lacks matching type_names metadata. A compromised or attacker-controlled Ceph monitor must supply the map to a kernel client with localized reads enabled; the resulting oops or panic interrupts the host.

CVSS severity7.5
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux kernel libceph allows remote attackers to crash affected Ceph client hosts via a malformed CRUSH map. In net/ceph/osdmap.c, get_immediate_parent() passes a NULL type-name pointer to strcmp() when a named parent bucket lacks matching type_names metadata. A compromised or attacker-controlled Ceph monitor must supply the map to a kernel client with localized reads enabled; the resulting oops or panic interrupts the host.

The record

CVE
CVE-2026-68157
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=117d96a04f007ce8fc2e292369056c3bd09f6f63 <3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50
  2. Affected versionversion=117d96a04f007ce8fc2e292369056c3bd09f6f63 <4716a64b7cc2797741f7be4e283ace78a9dff37d
  3. Affected versionversion=117d96a04f007ce8fc2e292369056c3bd09f6f63 <bbeae12fda3384a90fbebc8a19ba9d33f85b5361
  4. Affected versionversion=117d96a04f007ce8fc2e292369056c3bd09f6f63 <c46d82c47afc968d6ee8ef4470fa2dd35b765c21
  5. Affected versionversion=117d96a04f007ce8fc2e292369056c3bd09f6f63 <db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d
  6. Affected versionversion=5.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=117d96a04f007ce8fc2e292369056c3bd09f6f63 <3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50; version=117d96a04f007ce8fc2e292369056c3bd09f6f63 <4716a64b7cc2797741f7be4e283ace78a9dff37d; version=117d96a04f007ce8fc2e292369056c3bd09f6f63 <bbeae12fda3384a90fbebc8a19ba9d33f85b5361; version=117d96a04f007ce8fc2e292369056c3bd09f6f63 <c46d82c47afc968d6ee8ef4470fa2dd35b765c21; version=117d96a04f007ce8fc2e292369056c3bd09f6f63 <db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d; version=5.8

Published CVSS scores

7.5Linux CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.0Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation Flaws

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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