CVE-2026-68154
Detail
Received This CVE record has recently been published to the CVE List and has been included within the NVD dataset.
Description
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.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
NVD assessment
not yet provided.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
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Change History
4 change records found show changes
CVE Modified by kernel.org
8/19/2026 1:20:32 PM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/146461f09565afe3665e65b0423d3d6b0fe806c5
Added
Reference
https://git.kernel.org/stable/c/80fc40e11cda1b5d990a3f69c6efa344fb5cd987
Added
Reference
https://git.kernel.org/stable/c/952ca5dc99913d169263f59fd689f586729a13c1
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"b8a9fb6bf806f9c4891e71ae1beab0c07c23a877","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"826cd1de5802fd392922785f9b64d76e65d2a100","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"70998f91030ee083ecb336a1dff0701c20a38081","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"05f90284223381005d6bcddab3fda4a97f9c3401","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.34","status":"affected"},{"version":"0","lessThan":"2.6.34","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
Record truncated, showing 2048 of 2451 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"952ca5dc99913d169263f59fd689f586729a13c1","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"146461f09565afe3665e65b0423d3d6b0fe806c5","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"80fc40e11cda1b5d990a3f69c6efa344fb5cd987","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"b8a9fb6bf806f9c4891e71ae1beab0c07c23a877","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"826cd1de5802fd392922785f9b64d76e65d2a100","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"70998f91030ee083ecb336a1dff0701c20a38081","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"05f90284223381005d6bcddab3fda4a97f9c3401","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.34","status":"affected"},{"version":"0","lessThan":"2.6.34","versionType":"semver","status":"unaffected"},{"version":"5.10.265","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.216","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.183","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","sta
CVE Modified by kernel.org
8/17/2026 1:18:15 AM
Action
Type
Old Value
New Value
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"b8a9fb6bf806f9c4891e71ae1beab0c07c23a877","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"826cd1de5802fd392922785f9b64d76e65d2a100","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"70998f91030ee083ecb336a1dff0701c20a38081","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"05f90284223381005d6bcddab3fda4a97f9c3401","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.34","status":"affected"},{"version":"0","lessThan":"2.6.34","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc5","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"b8a9fb6bf806f9c4891e71ae1beab0c07c23a877","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"826cd1de5802fd392922785f9b64d76e65d2a100","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"70998f91030ee083ecb336a1dff0701c20a38081","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"05f90284223381005d6bcddab3fda4a97f9c3401","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.34","status":"affected"},{"version":"0","lessThan":"2.6.34","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
CVE Modified by kernel.org
8/13/2026 7:17:20 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
New CVE Received from kernel.org
8/10/2026 9:20:01 AM
Action
Type
Old Value
New Value
Added
Description
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.
Added
Reference
https://git.kernel.org/stable/c/05f90284223381005d6bcddab3fda4a97f9c3401
Added
Reference
https://git.kernel.org/stable/c/3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56
Added
Reference
https://git.kernel.org/stable/c/70998f91030ee083ecb336a1dff0701c20a38081
Added
Reference
https://git.kernel.org/stable/c/826cd1de5802fd392922785f9b64d76e65d2a100
Added
Reference
https://git.kernel.org/stable/c/b8a9fb6bf806f9c4891e71ae1beab0c07c23a877
Added
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"b8a9fb6bf806f9c4891e71ae1beab0c07c23a877","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"826cd1de5802fd392922785f9b64d76e65d2a100","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"70998f91030ee083ecb336a1dff0701c20a38081","versionType":"git","status":"affected"},{"version":"f24e9980eb860d8600cbe5ef3d2fd9295320d229","lessThan":"05f90284223381005d6bcddab3fda4a97f9c3401","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/ceph/osdmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.34","status":"affected"},{"version":"0","lessThan":"2.6.34","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc5","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
Quick Info
CVE Dictionary Entry: CVE-2026-68154 NVD
Published Date: 08/10/2026 NVD
Last Modified: 08/19/2026
Source: kernel.org
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