{"id":"CVE-2026-43255","summary":"wifi: libertas: fix WARNING in usb_tx_block","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: fix WARNING in usb_tx_block\n\nThe function usb_tx_block() submits cardp-\u003etx_urb without ensuring that\nany previous transmission on this URB has completed. If a second call\noccurs while the URB is still active (e.g. during rapid firmware loading),\nusb_submit_urb() detects the active state and triggers a warning:\n'URB submitted while active'.\n\nFix this by enforcing serialization: call usb_kill_urb() before\nsubmitting the new request. This ensures the URB is idle and safe to reuse.","modified":"2026-05-28T03:52:47.398353757Z","published":"2026-05-06T11:28:44.522Z","related":["SUSE-SU-2026:2068-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43255.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83"},{"type":"WEB","url":"https://git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43255.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43255"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172"},{"fixed":"498525d8358d6d20918787e59736d5b6a021e9fd"},{"fixed":"2902a9b4415a6bafc9b1e5dd360f065d757a0bb7"},{"fixed":"948a39c95d0f8d73722910f8cdb7b6e3e9206232"},{"fixed":"5bfb25495e391a1be0db94b15715174fa06b93a1"},{"fixed":"b82073564373e68c6ae3a96039fae14cd002a496"},{"fixed":"3308c7504e093b22e91a4468470309cee2e26b83"},{"fixed":"fc188b44547dea4e7350833171982a6312befde9"},{"fixed":"d66676e6ca96bf8680f869a9bd6573b26c634622"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43255.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.22"},{"fixed":"5.10.252"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43255.json"}}],"schema_version":"1.7.5"}