CVE-2026-43255 : faille moyenne linux linux kernel (CVSS 5.5)

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.

Sévérité

Moyenne (CVSS 5.5)

Vecteur CVSS

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation active

Non signalée par la CISA

Publication

6 mai 2026

Dernière mise à jour

17 juin 2026

• linux linux kernel

• Fiche CVE-2026-43255 sur le NVD (NIST)
• git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0…
• git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26…
• git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e…
• git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b9…
• git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206…
• git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a…
• git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634…
• git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312bef…