{"id":"CVE-2026-53112","summary":"wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet\n\nThe irq_prepare_bcn_tasklet is initialized in rtl_pci_init() and\nscheduled when RTL_IMR_BCNINT interrupt is triggered by hardware.\nBut it is never killed in rtl_pci_deinit(). When the rtlwifi card\nprobe fails or is being detached, the ieee80211_hw is deallocated.\nHowever, irq_prepare_bcn_tasklet may still be running or pending,\nleading to use-after-free when the freed ieee80211_hw is accessed\nin _rtl_pci_prepare_bcn_tasklet().\n\nSimilar to irq_tasklet, add tasklet_kill() in rtl_pci_deinit() to\nensure that irq_prepare_bcn_tasklet is properly terminated before\nthe ieee80211_hw is released.\n\nThe issue was identified through static analysis.","modified":"2026-07-08T08:09:45.555898952Z","published":"2026-06-24T16:30:45.359Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53112.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53112.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53112"},{"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":"0c8173385e549f95cd80c3fff5aab87b4f881d8d"},{"fixed":"ae10d4a1ab6bcaa1336abb171908a9a365761d3e"},{"fixed":"fac1079e0fdec6df6d7562c21941587236dc3def"},{"fixed":"e40873820c9d245ce482faa7ad514ebdb3b8d23d"},{"fixed":"008c456b76e9070979bc0e763897a5d3b0fdd4dc"},{"fixed":"7731b67bd59d1284d150cbe40a47e95a10613234"},{"fixed":"aa10a452e34810987fb9f4a047995b30003fb53f"},{"fixed":"3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b"},{"fixed":"039cd522dc70151da13329a5e3ae19b1736f468a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53112.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.38"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.141"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.91"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53112.json"}}],"schema_version":"1.7.5"}