CVE-2026-23021: net: usb: pegasus: fix memory leak in update_eth_regs_async()

Published Jan 31, 2026
·
Updated

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

net: usb: pegasus: fix memory leak in updateethregsasync()

When asynchronously writing to the device registers and if usbsubmiturb() fail, the code fail to release allocated to this point resources.

Affected Software

17 affected componentsFixes available
Linux Linux kernel
Linux Linux kernel>=3.10.1<5.10.248
Linux Linux kernel>=5.11<5.15.198
Linux Linux kernel>=5.16<6.1.161
Linux Linux kernel>=6.2<6.6.121
Linux Linux kernel>=6.7<6.12.66
Linux Linux kernel>=6.13<6.18.6
Linux Linux kernel=3.10
Linux Linux kernel=6.19-rc1
Linux Linux kernel=6.19-rc2
Linux Linux kernel=6.19-rc3
Linux Linux kernel=6.19-rc4
Linux Linux kernel=6.19-rc5
Linux Linux kernel=6.19-rc6
Linux Linux kernel=6.19-rc7
Linux Linux kernel=6.19-rc8
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.13-1

Event History

Jan 31, 2026
CVE Published
via MITRE·11:39 AM
Data Sourced
via MITRE·11:39 AM
Description
Data Sourced
via NVD·12:16 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2026-23021?

CVE-2026-23021 is classified as a low severity vulnerability due to its specific impact on memory leak handling.

2

How do I fix CVE-2026-23021?

To fix CVE-2026-23021, you should apply the latest patches from the Linux kernel updates that address this memory leak issue.

3

What systems are affected by CVE-2026-23021?

CVE-2026-23021 affects Linux kernel versions that utilize the Pegasus USB driver.

4

What is the impact of CVE-2026-23021?

The impact of CVE-2026-23021 is primarily a memory leak that can lead to resource exhaustion over time.

5

Is CVE-2026-23021 being exploited in the wild?

As of now, there are no reported active exploits for CVE-2026-23021 in the wild.

Contact

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