CVE-2026-68154

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Source
https://cve.org/CVERecord?id=CVE-2026-68154
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68154.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-68154
Downstream
Published
2026-08-10T11:59:20Z
Modified
2026-08-21T03:30:23Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
libceph: reject zero bucket types in crush_decode
Details

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

libceph: reject zero bucket types in crush_decode

CRUSH bucket type 0 is reserved for devices. The mapper relies on that invariant and uses type 0 to identify leaf devices.

If crush_decode() accepts a bucket with type 0, a malformed CRUSH map can make the mapper treat a negative bucket ID as a device and pass it to is_out(), which then indexes the OSD weight array with a negative value.

Reject zero bucket types while decoding the CRUSH map so the invalid state never reaches the mapper.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68154.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
f24e9980eb860d8600cbe5ef3d2fd9295320d229
Fixed
952ca5dc99913d169263f59fd689f586729a13c1
Fixed
146461f09565afe3665e65b0423d3d6b0fe806c5
Fixed
80fc40e11cda1b5d990a3f69c6efa344fb5cd987
Fixed
b8a9fb6bf806f9c4891e71ae1beab0c07c23a877
Fixed
826cd1de5802fd392922785f9b64d76e65d2a100
Fixed
3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56
Fixed
70998f91030ee083ecb336a1dff0701c20a38081
Fixed
05f90284223381005d6bcddab3fda4a97f9c3401

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68154.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.34
Fixed
5.10.265
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.216
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.183
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.148
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.101
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.42
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.6

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68154.json"