CVE-2026-43255
Description
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.
How to fix
- linux linux_kernel5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6 or later
- git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7
- git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83
- git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd
- git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1
- git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232
- git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496
- git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622
- git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.22 ≤ v < 5.10.252, 5.11 ≤ v < 5.15.202, 5.16 ≤ v < 6.1.165, 6.2 ≤ v < 6.6.128, 6.7 ≤ v < 6.12.75, 6.13 ≤ v < 6.18.16, 6.19 ≤ v < 6.19.6 | 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6 |
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