CVE-2026-68154Critical· 9.8▾ MidnightIn 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 de…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.7%
Last analysed / modified upstream
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.
Linux >= f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 952ca5dc99913d169263f59fd689f586729a13c1Linux >= f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 146461f09565afe3665e65b0423d3d6b0fe806c5Linux >= f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 80fc40e11cda1b5d990a3f69c6efa344fb5cd987Linux >= f24e9980eb860d8600cbe5ef3d2fd9295320d229 < b8a9fb6bf806f9c4891e71ae1beab0c07c23a877Linux >= f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 826cd1de5802fd392922785f9b64d76e65d2a100Linux >= f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56Linux >= f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 70998f91030ee083ecb336a1dff0701c20a38081Linux >= f24e9980eb860d8600cbe5ef3d2fd9295320d229 < 05f90284223381005d6bcddab3fda4a97f9c3401Linux 2.6.34Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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