{"id":"CVE-2021-47456","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_pci: peak_pci_remove(): fix UAF\n\nWhen remove the module peek_pci, referencing 'chan' again after\nreleasing 'dev' will cause UAF.\n\nFix this by releasing 'dev' later.\n\nThe following log reveals it:\n\n[   35.961814 ] BUG: KASAN: use-after-free in peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.963414 ] Read of size 8 at addr ffff888136998ee8 by task modprobe/5537\n[   35.965513 ] Call Trace:\n[   35.965718 ]  dump_stack_lvl+0xa8/0xd1\n[   35.966028 ]  print_address_description+0x87/0x3b0\n[   35.966420 ]  kasan_report+0x172/0x1c0\n[   35.966725 ]  ? peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.967137 ]  ? trace_irq_enable_rcuidle+0x10/0x170\n[   35.967529 ]  ? peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.967945 ]  __asan_report_load8_noabort+0x14/0x20\n[   35.968346 ]  peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.968752 ]  pci_device_remove+0xa9/0x250","modified":"2026-03-13T05:09:01.956351Z","published":"2024-05-22T07:15:10.627Z","related":["ALSA-2024:4352","SUSE-SU-2024:1979-1","SUSE-SU-2024:1983-1","SUSE-SU-2024:2008-1","SUSE-SU-2024:2010-1","SUSE-SU-2024:2011-1","SUSE-SU-2024:2019-1","SUSE-SU-2024:2183-1","SUSE-SU-2024:2184-1","SUSE-SU-2024:2185-1","SUSE-SU-2024:2189-1","SUSE-SU-2024:2190-1"],"references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/1c616528ba4aeb1125a06b407572ab7b56acae38"},{"type":"FIX","url":"https://git.kernel.org/stable/c/28f28e4bc3a5e0051faa963f10b778ab38c1db69"},{"type":"FIX","url":"https://git.kernel.org/stable/c/34914971bb3244db4ce2be44e9438a9b30c56250"},{"type":"FIX","url":"https://git.kernel.org/stable/c/447d44cd2f67a20b596ede3ca3cd67086dfd9ca9"},{"type":"FIX","url":"https://git.kernel.org/stable/c/949fe9b35570361bc6ee2652f89a0561b26eec98"},{"type":"FIX","url":"https://git.kernel.org/stable/c/adbda14730aacce41c0d3596415aa39ad63eafd9"},{"type":"FIX","url":"https://git.kernel.org/stable/c/0e5afdc2315b0737edcf55bede4ee1640d2d464d"},{"type":"FIX","url":"https://git.kernel.org/stable/c/1248582e47a9f7ce0ecd156c39fc61f8b6aa3699"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47456.json","unresolved_ranges":[{"events":[{"introduced":"3.4"},{"fixed":"4.4.290"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.288"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.253"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.214"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.156"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.76"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.14.15"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc3"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc4"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc5"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc6"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}