CVE-2026-31713 Details
Description
In the Linux kernel, the following vulnerability has been resolved: fuse: abort on fatal signal during sync init When sync init is used and the server exits for some reason (error, crash) while processing FUSE_INIT, the filesystem creation will hang. The reason is that while all other threads will exit, the mounting thread (or process) will keep the device fd open, which will prevent an abort from happening. This is a regression from the async mount case, where the mount was done first, and the FUSE_INIT processing afterwards, in which case there's no such recursive syscall keeping the fd open.
A vulnerability in the Linux kernel's FUSE (Filesystem in Userspace) implementation can cause the filesystem creation process to hang. This issue arises when the server unexpectedly exits while processing the FUSE_INIT command during synchronous initialization. In such cases, all threads except the mounting thread will terminate, leaving the device file descriptor open and preventing an abort. This behavior is a regression from the asynchronous mounting process, where the FUSE_INIT handling does not create a recursive system call that keeps the file descriptor open.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/0c7fca880a40a209a9c92be14143996d14b93ff6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/204aa22a686bfee48daca7db620c1e017615f2ff | kernel.org | Patch |
| https://git.kernel.org/stable/c/300e812b882a174dca675d8028684001ad5826bc | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.18, < 6.18.25 >= 6.19, < 7.0.2 7.1 rc1 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 6, 2026 | Initial Analysis | [email protected] |
| May 1, 2026 | New CVE Received | kernel.org |