{"id":"CVE-2026-43255","state":"PUBLISHED","title":"wifi: libertas: fix WARNING in usb_tx_block","description":"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->tx_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.","publishedAt":"2026-05-06T11:28:44.522Z","updatedAt":"2026-05-11T22:21:00.707Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"498525d8358d6d20918787e59736d5b6a021e9fd","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"2902a9b4415a6bafc9b1e5dd360f065d757a0bb7","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"948a39c95d0f8d73722910f8cdb7b6e3e9206232","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"5bfb25495e391a1be0db94b15715174fa06b93a1","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"b82073564373e68c6ae3a96039fae14cd002a496","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"3308c7504e093b22e91a4468470309cee2e26b83","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"fc188b44547dea4e7350833171982a6312befde9","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"d66676e6ca96bf8680f869a9bd6573b26c634622","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/marvell/libertas/if_usb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.22","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.22","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/marvell/libertas/if_usb.c"]}],"references":["https://git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd","https://git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7","https://git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232","https://git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1","https://git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496","https://git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83","https://git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9","https://git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43255.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43255","state":"PUBLISHED","datePublished":"2026-05-06T11:28:44.522Z","dateUpdated":"2026-05-11T22:21:00.707Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.996Z"},"containers":{"cna":{"title":"wifi: libertas: fix WARNING in usb_tx_block","descriptions":[{"lang":"en","value":"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->tx_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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"498525d8358d6d20918787e59736d5b6a021e9fd","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"2902a9b4415a6bafc9b1e5dd360f065d757a0bb7","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"948a39c95d0f8d73722910f8cdb7b6e3e9206232","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"5bfb25495e391a1be0db94b15715174fa06b93a1","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"b82073564373e68c6ae3a96039fae14cd002a496","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"3308c7504e093b22e91a4468470309cee2e26b83","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"fc188b44547dea4e7350833171982a6312befde9","versionType":"git"},{"version":"876c9d3aeb989cf1961f2c228d309ba5dcfb1172","status":"affected","lessThan":"d66676e6ca96bf8680f869a9bd6573b26c634622","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/marvell/libertas/if_usb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.22","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.22","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/marvell/libertas/if_usb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd"},{"url":"https://git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7"},{"url":"https://git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232"},{"url":"https://git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1"},{"url":"https://git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496"},{"url":"https://git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83"},{"url":"https://git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9"},{"url":"https://git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:21:00.707Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}