In the Linux kernel, the following vulnerability has been resolved:

libceph: guard missing CRUSH type name lookup

Localized read selection can walk a parent bucket whose name exists in
the CRUSH map while its type has no matching entry in type_names.
get_immediate_parent() then dereferences a NULL type_cn and passes an
invalid pointer into strcmp(), causing a null-ptr-deref.

Skip such malformed parent buckets unless both the bucket name and type
name metadata are present. This keeps malformed hierarchy data from
crashing locality lookup and safely falls back to "not local".

[ idryomov: add WARN_ON_ONCE ]

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
117d96a04f007ce8fc2e292369056c3bd09f6f63 affected < c46d82c47afc968d6ee8ef4470fa2dd35b765c21
117d96a04f007ce8fc2e292369056c3bd09f6f63 affected < 3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50
117d96a04f007ce8fc2e292369056c3bd09f6f63 affected < 4716a64b7cc2797741f7be4e283ace78a9dff37d
117d96a04f007ce8fc2e292369056c3bd09f6f63 affected < db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d
117d96a04f007ce8fc2e292369056c3bd09f6f63 affected < bbeae12fda3384a90fbebc8a19ba9d33f85b5361
Linux Linux affected
Version Status Constraints
5.8 affected —
0 unaffected < 5.8
6.6.148 unaffected ≤ 6.6.*
6.12.101 unaffected ≤ 6.12.*
6.18.42 unaffected ≤ 6.18.*
7.1.6 unaffected ≤ 7.1.*
7.2-rc5 unaffected ≤ *

No data.

No data.

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50 cve-icon
https://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d cve-icon
https://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361 cve-icon
https://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21 cve-icon
https://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d cve-icon
History

Mon, 10 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476

Mon, 10 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: libceph: guard missing CRUSH type name lookup Localized read selection can walk a parent bucket whose name exists in the CRUSH map while its type has no matching entry in type_names. get_immediate_parent() then dereferences a NULL type_cn and passes an invalid pointer into strcmp(), causing a null-ptr-deref. Skip such malformed parent buckets unless both the bucket name and type name metadata are present. This keeps malformed hierarchy data from crashing locality lookup and safely falls back to "not local". [ idryomov: add WARN_ON_ONCE ]
Title libceph: guard missing CRUSH type name lookup
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-10T11:59:23.692Z

Reserved: 2026-07-30T09:28:09.371Z

Link: CVE-2026-68157

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-10T19:15:17Z

Weaknesses