BaseFortify

Publication date: 2026-01-31

Last updated on: 2026-06-02

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: pnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node() In nfs4_ff_alloc_deviceid_node(), if the allocation for ds_versions fails, the function jumps to the out_scratch label without freeing the already allocated dsaddrs list, leading to a memory leak. Fix this by jumping to the out_err_drain_dsaddrs label, which properly frees the dsaddrs list before cleaning up other resources.

CVSS Scores

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Meta Information

Published

2026-01-31

Last Modified

2026-06-02

Generated

2026-07-06

AI Q&A

2026-01-31

EPSS Evaluated

2026-07-05

NVD

CVE-2026-23038

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is a memory leak in the Linux kernel's pnfs/flexfiles component. Specifically, in the function nfs4_ff_alloc_deviceid_node(), if the allocation for ds_versions fails, the function incorrectly jumps to a label that does not free the already allocated dsaddrs list, causing a memory leak. The fix involves changing the jump to a label that properly frees the dsaddrs list before cleaning up other resources.

Mitigation Strategies

Apply the patch or update to the Linux kernel version that includes the fix for the memory leak in nfs4_ff_alloc_deviceid_node(). This fix ensures proper freeing of allocated memory and prevents the leak. Until then, consider monitoring system memory usage related to NFS operations and avoid workloads that heavily use pnfs/flexfiles if possible.

Impact Analysis

The memory leak caused by this vulnerability can lead to increased memory usage in the Linux kernel, potentially degrading system performance or causing resource exhaustion over time if the faulty code path is frequently executed.

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