CVE-2026-68374

Kernel memory disclosure and corruption via sysfs race

Published Aug 10, 2026 · Updated Aug 10, 2026

Use-after-free in Linux kernel USB sysfs branches before 6.12.101, 6.18.42, and 7.1.6 allows local users to read or corrupt kernel memory. bos_descriptors_read() copies from udev->bos without holding the USB device lock while usb_reset_and_verify_device() can free that buffer during reset. A low-privileged user with USB-device access can race world-readable sysfs reads against resets, causing kernel-memory disclosure, corruption, or a system panic.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux kernel USB sysfs branches before 6.12.101, 6.18.42, and 7.1.6 allows local users to read or corrupt kernel memory. bos_descriptors_read() copies from udev->bos without holding the USB device lock while usb_reset_and_verify_device() can free that buffer during reset. A low-privileged user with USB-device access can race world-readable sysfs reads against resets, causing kernel-memory disclosure, corruption, or a system panic.

The record

CVE
CVE-2026-68374
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=0 <6.12.101
  2. Affected versionversion=0 <6.18.42
  3. Affected versionversion=0 <7.1.6
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <217774e143d7b5a88739193284b6421be3978601
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4e0197fbb0eec588795d5431716a244d9ac8fa93
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ab82adf5e63b2d89ead7933ab753b9cedbe028e9
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c07caee449c968842a350bfefa049889923b8240

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.12.101; version=0 <6.18.42; version=0 <7.1.6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <217774e143d7b5a88739193284b6421be3978601; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4e0197fbb0eec588795d5431716a244d9ac8fa93; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ab82adf5e63b2d89ead7933ab753b9cedbe028e9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c07caee449c968842a350bfefa049889923b8240

Published CVSS scores

7.8Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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