Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure es58x_read_bulk_callback() resubmits the RX URB after processing a received packet. If the resubmit succeeds, the URB remains anchored and will be handled by the normal RX path or by teardown. However, if usb_submit_urb() fails, the callback unanchors the URB and then returns directly. This skips the existing free_urb path, so the coherent transfer buffer allocated with usb_alloc_coherent() is not released. Reuse the existing free_urb path after a resubmit failure so that the RX coherent buffer is freed before leaving the callback.
References
- https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142
- https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d
- https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2
- https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b
- https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c
- https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0
- https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f
FAQ
What is CVE-2026-74459?
CVE-2026-74459 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure es58x_read_bulk_callback() resubmits the R...
How severe is CVE-2026-74459?
CVSS scoring is not yet available for CVE-2026-74459. Check NVD for updates.
Is there a patch for CVE-2026-74459?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.