CVE-2026-74456: can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error
Published Aug 15, 2026
·Updated
can: peakusb: peakusbstart(): fix double free of transfer buffer on URB submit error
Affected Software
2 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.150.1-1<6.6.152.1-1
6.6.152.1-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.152.1-1
Event History
Aug 15, 2026
CVE Published
via MITRE·12:26 PM
Data Sourced
via MITRE·12:26 PM
DescriptionSeverity
Data Sourced
via NVD·01:17 PM
DescriptionSeverity
Aug 23, 2026
Data Sourced
via Microsoft·09:59 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-74456?
The severity of CVE-2026-74456 is rated 34.
2
What does CVE-2026-74456 involve?
CVE-2026-74456 involves a fix for a double free of the transfer buffer during URB submit error in the Linux kernel.
3
How do I fix CVE-2026-74456?
To fix CVE-2026-74456, ensure that the Linux kernel is updated to a version that includes the patch addressing this vulnerability.
4
What systems are affected by CVE-2026-74456?
CVE-2026-74456 affects systems using the Linux kernel that utilize the peak_usb module.
5
Is CVE-2026-74456 a critical vulnerability?
CVE-2026-74456 is classified as a vulnerability due to the potential for a double free exploit in the Linux kernel.