CVE-2026-98867
Received
Received - Intake
dm-pcache Logical Key Offset Validation Flaw in Linux Kernel
Vulnerability report for CVE-2026-98867, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-18
Last updated on: 2026-10-18
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
dm-pcache: bound the logical key offset from persistent memory
cache_key_decode() takes a key's logical off from the cache device and
later indexes req_key_tree->subtrees[] by it in get_subtree(). An off
past the device forms a subtree pointer outside the array, which
rb_insert() writes through during replay.
Reject a key of zero length, or whose off+len (computed in 64 bits)
exceeds the device size, before it is used.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 |
| Linux | Linux | 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 |
| Linux | Linux | 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 |
| Linux | Linux | 6.18 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
