CVE-2026-43255

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7	Patch
https://git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83	Patch
https://git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd	Patch
https://git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1	Patch
https://git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232	Patch
https://git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496	Patch
https://git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622	Patch
https://git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-05-06 12:16

Updated : 2026-06-17 10:49

NVD link : CVE-2026-43255

Mitre link : CVE-2026-43255

CVE.ORG link : CVE-2026-43255

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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