CVE-2026-46103 PUBLISHED

can: ucan: fix devres lifetime

Assigner: Linux
Reserved: 13.05.2026 Published: 27.05.2026 Updated: 27.05.2026

In the Linux kernel, the following vulnerability has been resolved:

can: ucan: fix devres lifetime

USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes).

Fix the control message buffer lifetime so that it is released on driver unbind.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 9f2d3eae88d26c29d96e42983b755940d9169cd9 to 4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705 (excl.)
  • affected from 9f2d3eae88d26c29d96e42983b755940d9169cd9 to 10b7b676b78a7bd888d19729b459aad7fc1f428b (excl.)
  • affected from 9f2d3eae88d26c29d96e42983b755940d9169cd9 to c524c124e3094d2de12235a513854c03d06a2b58 (excl.)
  • affected from 9f2d3eae88d26c29d96e42983b755940d9169cd9 to c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae (excl.)
  • affected from 9f2d3eae88d26c29d96e42983b755940d9169cd9 to fed4626501c871890da287bec62a96e52da1af89 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 4.19 is affected
  • unaffected from 0 to 4.19 (excl.)
  • unaffected from 6.6.140 to 6.6.* (incl.)
  • unaffected from 6.12.86 to 6.12.* (incl.)
  • unaffected from 6.18.27 to 6.18.* (incl.)
  • unaffected from 7.0.4 to 7.0.* (incl.)
  • unaffected from 7.1-rc1 to * (incl.)

References