CVE-2026-43255

Summary

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

wifi: libertas: fix WARNING in usb_tx_block

The function usb_tx_block() submits cardp->tx_urb without ensuring that any previous transmission on this URB has completed. If a second call occurs while the URB is still active (e.g. during rapid firmware loading), usb_submit_urb() detects the active state and triggers a warning: 'URB submitted while active'.

Fix this by enforcing serialization: call usb_kill_urb() before submitting the new request. This ensures the URB is idle and safe to reuse.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux876c9d3aeb989cf1961f2c228d309ba5dcfb1172 < 498525d8358d6d20918787e59736d5b6a021e9fdaffected
LinuxLinux876c9d3aeb989cf1961f2c228d309ba5dcfb1172 < 2902a9b4415a6bafc9b1e5dd360f065d757a0bb7affected
LinuxLinux876c9d3aeb989cf1961f2c228d309ba5dcfb1172 < 948a39c95d0f8d73722910f8cdb7b6e3e9206232affected
LinuxLinux876c9d3aeb989cf1961f2c228d309ba5dcfb1172 < 5bfb25495e391a1be0db94b15715174fa06b93a1affected
LinuxLinux876c9d3aeb989cf1961f2c228d309ba5dcfb1172 < b82073564373e68c6ae3a96039fae14cd002a496affected
LinuxLinux876c9d3aeb989cf1961f2c228d309ba5dcfb1172 < 3308c7504e093b22e91a4468470309cee2e26b83affected
LinuxLinux876c9d3aeb989cf1961f2c228d309ba5dcfb1172 < fc188b44547dea4e7350833171982a6312befde9affected
LinuxLinux876c9d3aeb989cf1961f2c228d309ba5dcfb1172 < d66676e6ca96bf8680f869a9bd6573b26c634622affected
LinuxLinux2.6.22affected
LinuxLinux0 < 2.6.22unaffected
LinuxLinux5.10.252 <= 5.10.*unaffected
LinuxLinux5.15.202 <= 5.15.*unaffected
LinuxLinux6.1.165 <= 6.1.*unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References