CVE-2026-80878
Received Received - Intake

AFS Volume Leak in Linux Kernel

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: afs: Fix leak of ungot volume Fix afs_lookup_volume_rcu() so that it doesn't leak a dying volume if afs_try_get_volume() fails.

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-05
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-80878
EUVD
EUVD-2026-71508

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves a memory leak in the AFS (Andrew File System) module. Specifically, the function afs_lookup_volume_rcu() fails to properly handle a dying volume when afs_try_get_volume() returns an error, causing the volume to leak.

Detection Guidance

This vulnerability is specific to the Linux kernel's AFS (Andrew File System) module and involves a memory leak in afs_lookup_volume_rcu(). Detection requires checking for kernel logs or memory leaks related to AFS operations. Commands like dmesg, journalctl -k, or monitoring /proc/slabinfo for afs-related memory usage may help. No direct commands are provided in the context.

Impact Analysis

The impact is primarily on system stability and resource usage. A leaked volume could lead to gradual memory exhaustion, potentially causing system slowdowns or crashes over time. This is more critical in environments with high AFS usage.

Mitigation Strategies

Apply the latest Linux kernel patches that address this issue. If using a distribution with AFS support, update to the patched kernel version. Restart services using AFS if necessary. Monitor system logs for signs of the vulnerability after patching.

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