CVE-2026-43255
wifi: libertas: fix WARNING in usb_tx_block
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.22
References 8
git.kernel.org
- stable/c/498525d8358d6d20918787e59736d5b6a021e9fd
- stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7
- stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232
- stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1
- stable/c/b82073564373e68c6ae3a96039fae14cd002a496
- stable/c/3308c7504e093b22e91a4468470309cee2e26b83
- stable/c/fc188b44547dea4e7350833171982a6312befde9
- stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622