CVE-2026-74459

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf6e90c113c92e83fc0963d5e60e16b0e8a268981 < 0ef136ba052101243ba117a1aca6f4a4c3a81142affected
LinuxLinuxb878444519fa03a3edd287d1963cf79ef78be2f1 < b85e5c310382803d27adf6fe6554d4208bc8951caffected
LinuxLinux18eee279e9b5bff0db1aca9475ae4bc12804f05c < c311f17c261fd375ddf5755f2ebe1f022c19c5b0affected
LinuxLinux5eaad4f768266f1f17e01232ffe2ef009f8129b7 < 19c6c8c6cd5dd14fab5fcd744584812a57cbb78daffected
LinuxLinux5eaad4f768266f1f17e01232ffe2ef009f8129b7 < 7a0cf2b2497c757c3cb1286eddf2986abb0d387baffected
LinuxLinux7a0171b4921ad443fee5ed4fcb9d99fa4776edacaffected
LinuxLinux2185ea6e4ebcb61d1224dc7d187c59723cb5ad59affected
LinuxLinuxb8f9ca88253574638bcff38900a4c28d570b1919affected
LinuxLinux6.6.130 < 6.6.151affected
LinuxLinux6.12.77 < 6.12.103affected
LinuxLinux6.18.17 < 6.18.44affected
LinuxLinux5.15.203 < 5.16affected
LinuxLinux6.1.167 < 6.2affected
LinuxLinux6.19.7 < 6.20affected
LinuxLinux7.0affected
LinuxLinux0 < 7.0unaffected
LinuxLinux6.6.151 <= 6.6.*unaffected
LinuxLinux6.12.103 <= 6.12.*unaffected
LinuxLinux6.18.44 <= 6.18.*unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2-rc6 <= *unaffected

Weaknesses

References