AZL-77124
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-77124.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-77124
- Upstream
- Published
- 2026-02-04T17:16:16Z
- Modified
- 2026-08-28T17:48:02.107448029Z
- Summary
- CVE-2026-23061 affecting package kernel for versions less than 6.6.126.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
can: kvaserusb: kvaserusbreadbulk_callback(): fix URB memory leak
Fix similar memory leak as in commit 7352e1d5932a ("can: gsusb: gsusbreceivebulk_callback(): fix URB memory leak").
In kvaserusbset_{,data_}bittiming() -> kvaserusbsetuprxurbs(), the URBs for USB-in transfers are allocated, added to the dev->rxsubmitted anchor and submitted. In the complete callback kvaserusbreadbulkcallback(), the URBs are processed and resubmitted. In kvaserusbremoveinterfaces() the URBs are freed by calling usbkillanchoredurbs(&dev->rxsubmitted).
However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in usbkillanchored_urbs().
Fix the memory leak by anchoring the URB in the kvaserusbreadbulkcallback() to the dev->rx_submitted anchor.
- References