What is CVE-2026-90034?

CVE-2026-90034 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 2.6.12 onward and patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-90034 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-90034?

CVE-2026-90034 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-90034?

Yes, CVE-2026-90034 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-90034 actively exploited?

CVE-2026-90034 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-90034

In the Linux kernel, the following vulnerability has been resolved: usb: image: mdc800: change kmalloc() to kzalloc() Change the kmalloc() calls in usb_mdc800_init() for irq_urb_buffer and download_urb_buffer to kzalloc(), avoiding potential stack leaks if a shorter message is received in mdc800_usb_irq() and mdc800_usb_download_notify()

Package Linux Kernel

Published 2026-09-16

Last modified 2026-09-17

Patch available

Yes

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5, 7.3-rc2 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 5.10.270 5.10.x ✓ 5.15.221 5.15.x ✓ 6.1.188 6.1.x ✓ 6.6.157 6.6.x ✓ 6.12.110 6.12.x ✓ 6.18.51 6.18.x ✓ 7.2.5 7.2.x ✓ 7.3-rc2

References

8 total

Showing 5 of 8 references View all on NVD

Frequently asked questions

What is CVE-2026-90034?

CVE-2026-90034 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.12 onward and has been patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-90034 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-90034?

Yes. CVE-2026-90034 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-90034 actively exploited?

No. CVE-2026-90034 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.