CVE-2026-74414Public exploit

Local denial of service via premature inode marking

Published Aug 15, 2026 · Updated Aug 15, 2026

Null-pointer dereference in Linux kernel HFS+ 7.1 through 7.1.4 allows local users to crash the host via setxattr on a mounted HFS+ volume. hfsplus_create_attributes_file marks the unloaded attributes-tree inode dirty before hfs_btree_open initializes the tree, causing a null dereference. The path requires an HFS+ volume whose attributes file was absent at mount and permission to set an extended attribute; the kernel fault interrupts the host.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null-pointer dereference in Linux kernel HFS+ 7.1 through 7.1.4 allows local users to crash the host via setxattr on a mounted HFS+ volume. hfsplus_create_attributes_file marks the unloaded attributes-tree inode dirty before hfs_btree_open initializes the tree, causing a null dereference. The path requires an HFS+ volume whose attributes file was absent at mount and permission to set an extended attribute; the kernel fault interrupts the host.

The record

CVE
CVE-2026-74414
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.1
  2. Affected versionversion=ee8422d00b7cfa028823ebf1f28bf9dea428cac3 <7a41fd2b32e5908f19a68732008d581c167279dd
  3. Affected versionversion=ee8422d00b7cfa028823ebf1f28bf9dea428cac3 <b3c7ccb1a93cbb5a9a13196abf608ffa2516817e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=7.1; version=ee8422d00b7cfa028823ebf1f28bf9dea428cac3 <7a41fd2b32e5908f19a68732008d581c167279dd; version=ee8422d00b7cfa028823ebf1f28bf9dea428cac3 <b3c7ccb1a93cbb5a9a13196abf608ffa2516817e

Published CVSS scores

5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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