# CVE-2026-31608

> Vulnerability · severity: **CRITICAL** (CVSS 9.8).

## Description

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

smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()

smb_direct_flush_send_list() already calls smb_direct_free_sendmsg(),
so we should not call it again after post_sendmsg()
moved it to the batch list.

## Key facts

- **CVE ID:** CVE-2026-31608
- **Published:** 2026-04-24
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.8
- **CWE codes:** CWE-415

## Affected products

- `linux:linux_kernel`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-31608

## Citation

> AI Analytics. CVE-2026-31608. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-31608. Derived from NIST NVD. Licensed CC0.

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