CVE-2026-98453
Received
Received - Intake
SMB Handle Leak in Linux Kernel SMB Client
Vulnerability report for CVE-2026-98453, 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:
smb: client: close handle after create-context parsing failure
SMB2_open() accounts a successful CREATE response as a remote open before
parsing its create contexts. If smb2_parse_contexts() rejects malformed
context data, SMB2_open() returns without closing the handle, leaving the
server-side handle open and num_remote_opens elevated.
Close the handle after a post-CREATE context parsing failure so the error
path releases the remote resource and balances the open count.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | af1689a9b7701d9907dfc84d2a4b57c4bc907144 |
| Linux | Linux | af1689a9b7701d9907dfc84d2a4b57c4bc907144 |
| Linux | Linux | af1689a9b7701d9907dfc84d2a4b57c4bc907144 |
| Linux | Linux | af1689a9b7701d9907dfc84d2a4b57c4bc907144 |
| Linux | Linux | 6726429c18c62dbf5e96ebbd522f262e016553fb |
| Linux | Linux | 13fb0fc4917621f3dfa285a27eaf7151d770b5e5 |
| Linux | Linux | 890bc4fac3c0973a49cac35f634579bebba7fe48 |
| Linux | Linux | 1ae3c59355dc9882e09c020afe8ffbd895ad0f29 |
| Linux | Linux | 17a0f64cc02d4972e21c733d9f21d1c512963afa |
| Linux | Linux | 5.4.277 |
| Linux | Linux | 5.10.211 |
| Linux | Linux | 5.15.150 |
| Linux | Linux | 6.1.79 |
| Linux | Linux | 6.6.8 |
| Linux | Linux | 6.7 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
