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CVE-2026-64348

Updated on 25 Jul 2026

Severity

7.8 High severity

Details

CVSS score
7.8
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

In the Linux kernel, the following vulnerability has been resolved:

usb: free iso schedules on failed submit

EHCI and FOTG210 isochronous submits build an ehci_iso_sched before linking the URB to the endpoint queue, and keep the staged schedule in urb->hcpriv until iso_stream_schedule() and the link helpers consume it. If the controller is no longer accessible, or usb_hcd_link_urb_to_ep() fails, submit jumps to done_not_linked before that handoff happens and leaks the staged schedule still attached to urb->hcpriv.

Free the staged schedule from done_not_linked when submit fails before the URB is linked and clear urb->hcpriv after the free.

The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1.

An x86_64 allyesconfig build showed no new warnings. As we do not have an EHCI host controller with a USB isochronous device to test with, no runtime testing was able to be performed.

Details

Affected product:
AlmaLinux 9.2 ESU , Amazon Linux 2 ELS , CentOS 6 ELS , CentOS 7 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , CloudLinux 7 ELS , Debian 10 ELS , Debian 11 ELS , Oracle Linux 6 ELS , Oracle Linux 7 ELS , RHEL 7 ELS , TuxCare 9.6 ESU , TuxCare 9.8 ESU , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS , Ubuntu 20.04 ELS
Affected packages:
linux @ 5.10.259 (+19 more)

Fixes

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
AlmaLinux 9.2 ESU Released
35 kernels
  • 5.14.0-284.1101.el9_2.tuxcare.7.els20
  • 5.14.0-284.1101.el9_2.tuxcare.7.els21
  • 5.14.0-284.1101.el9_2.tuxcare.7.els23
  • 5.14.0-284.1101.el9_2.tuxcare.7.els22
  • 5.14.0-284.1101.el9_2.tuxcare.7.els14
  • 5.14.0-284.1101.el9_2.tuxcare.7.els18
  • 5.14.0-284.1101.el9_2.tuxcare.7.els16
  • 5.14.0-284.1101.el9_2.tuxcare.7.els15
  • 5.14.0-284.1101.el9_2.tuxcare.7.els17
  • 5.14.0-284.1101.el9_2.tuxcare.7.els19
  • 5.14.0-284.1101.el9_2.tuxcare.7.els24
  • 5.14.0-284.1101.el9_2.tuxcare.7.els25
  • 5.14.0-284.1101.el9_2.tuxcare.7.els26
  • 5.14.0-284.1101.el9_2.tuxcare.7.els27
  • 5.14.0-284.1101.el9_2.tuxcare.7.els28
  • 5.14.0-284.1101.el9_2.tuxcare.7.els29
  • 5.14.0-284.1101.el9_2.tuxcare.7.els30
  • 5.14.0-284.1101.el9_2.tuxcare.7.els31
  • 5.14.0-284.1101.el9_2.tuxcare.7.els32
  • 5.14.0-284.1101.el9_2.tuxcare.7.els35
  • 5.14.0-284.1101.el9_2.tuxcare.7.els34
  • 5.14.0-284.1101.el9_2.tuxcare.11.els1
  • 5.14.0-284.1101.el9_2.tuxcare.11.els2
  • 5.14.0-284.1101.el9_2.tuxcare.11.els3
  • 5.14.0-284.1101.el9_2.tuxcare.11.els4
  • 5.14.0-284.1101.el9_2.tuxcare.11.els5
  • 5.14.0-284.1101.el9_2.tuxcare.11.els6
  • 5.14.0-284.1101.el9_2.tuxcare.11.els7
  • 5.14.0-284.1101.el9_2.tuxcare.11.els8
  • 5.14.0-284.1101.el9_2.tuxcare.11.els9
  • 5.14.0-284.1101.el9_2.tuxcare.11.els10
  • 5.14.0-284.1101.el9_2.tuxcare.11.els11
  • 5.14.0-284.1101.el9_2.tuxcare.11.els12
  • 5.14.0-284.1101.el9_2.tuxcare.11.els13
  • 5.14.0-284.1101.el9_2.tuxcare.7.els13
AlmaLinux 9.6 ESU In Rollout
20 kernels
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els1
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els2
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els3
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els4
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els5
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els6
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els7
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els1
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els2
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els3
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els4
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els5
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els6
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els7
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els8
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els10
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els11
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els12
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els13
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els14
CentOS 7 ELS Released
37 kernels
  • 3.10.0-1160.119.1.el7.tuxcare.els10
  • 3.10.0-1160.119.1.el7.tuxcare.els4
  • 3.10.0-1160.119.1.el7.tuxcare.els6
  • 3.10.0-1160.119.1.el7.tuxcare.els15
  • 3.10.0-1160.119.1.el7.tuxcare.els5
  • 3.10.0-1160.119.1.el7.tuxcare.els3
  • 3.10.0-1160.119.1.el7.tuxcare.els14
  • 3.10.0-1160.119.1.el7.tuxcare.els16
  • 3.10.0-1160.119.1.el7.tuxcare.els13
  • 3.10.0-1160.119.1.el7.tuxcare.els7
  • 3.10.0-1160.119.1.el7.tuxcare.els12
  • 3.10.0-1160.119.1.el7.tuxcare.els9
  • 3.10.0-1160.119.1.el7.tuxcare.els8
  • 3.10.0-1160.119.1.el7.tuxcare.els17
  • 3.10.0-1160.119.1.el7.tuxcare.els18
  • 3.10.0-1160.119.1.el7.tuxcare.els19
  • 3.10.0-1160.119.1.el7.tuxcare.els20
  • 3.10.0-1160.119.1.el7.tuxcare.els21
  • 3.10.0-1160.119.1.el7.tuxcare.els24
  • 3.10.0-1160.119.1.el7.tuxcare.els22
  • 3.10.0-1160.119.1.el7.tuxcare.els25
  • 3.10.0-1160.139.1.el7.tuxcare.els2
  • 3.10.0-1160.139.1.el7.tuxcare.els3
  • 3.10.0-1160.139.1.el7.tuxcare.els4
  • 3.10.0-1160.142.1.el7.tuxcare.els1
  • 3.10.0-1160.144.1.el7.tuxcare.els1
  • 3.10.0-1160.144.1.el7.tuxcare.els2
  • 3.10.0-1160.144.1.el7.tuxcare.els3
  • 3.10.0-1160.144.1.el7.tuxcare.els4
  • 3.10.0-1160.144.1.el7.tuxcare.els5
  • 3.10.0-1160.144.1.el7.tuxcare.els6
  • 3.10.0-1160.144.1.el7.tuxcare.els8
  • 3.10.0-1160.144.1.el7.tuxcare.els7
  • 3.10.0-1160.144.1.el7.tuxcare.els9
  • 3.10.0-1160.156.1.el7.tuxcare.els1
  • 3.10.0-1160.156.1.el7.tuxcare.els2
  • 3.10.0-1160.156.1.el7.tuxcare.els3
Debian 11 Planned —
Debian 11 cloud Planned —
Debian 13 Released
12 kernels
  • 6.12.85-1
  • 6.12.86-1
  • 6.12.88-1
  • 6.12.74-2
  • 6.12.73-1
  • 6.12.63-1
  • 6.12.69-1
  • 6.12.74-1
  • 6.12.90-1
  • 6.12.90-2
  • 6.12.94-1
  • 6.12.95-1
Ubuntu 24.04 Planned —
Ubuntu 24.04 AWS Planned —
Ubuntu 26.04 Will Not Fix —