{"id":"CVE-2026-68410","summary":"wifi: libertas: fix memory leak in helper_firmware_cb()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: fix memory leak in helper_firmware_cb()\n\nhelper_firmware_cb() neglects to free the single-stage firmware image\nafter a successful async load, leading to a memory leak in the USB\nfirmware-download path.\n\nFix this memory leak by calling release_firmware() immediately after\nlbs_fw_loaded() returns.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still present in\nthe current wireless tree.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have\ncompatible Libertas USB hardware for exercising this firmware-download\npath, no runtime testing was able to be performed.","modified":"2026-08-21T03:30:11.782036468Z","published":"2026-08-10T12:04:30.194Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68410.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/63c2391deefb31e1b801b7f32bd502ca4808639b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/644640cde2fb216e6567de5eee780a38dbc95928"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6c1f54a04813676c5a2150d99331c8d21f199374"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6cda91bbb8dc3d22ef0323008a12dcf73a5129da"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce829286f4935f1eb6b5dcb64da02910ce149c76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d497b7566e74920acfe283dd6b2cbf1682890796"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68410.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68410"},{"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":"1dfba3060fe7ee03ccec25a91d35085142dfc295"},{"fixed":"6c1f54a04813676c5a2150d99331c8d21f199374"},{"fixed":"7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06"},{"fixed":"ce829286f4935f1eb6b5dcb64da02910ce149c76"},{"fixed":"d497b7566e74920acfe283dd6b2cbf1682890796"},{"fixed":"eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c"},{"fixed":"6cda91bbb8dc3d22ef0323008a12dcf73a5129da"},{"fixed":"644640cde2fb216e6567de5eee780a38dbc95928"},{"fixed":"63c2391deefb31e1b801b7f32bd502ca4808639b"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68410.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.13.0"},{"fixed":"5.10.265"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.216"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.183"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68410.json"}}],"schema_version":"1.9.0"}