{"id":"CVE-2024-46743","summary":"of/irq: Prevent device address out-of-bounds read in interrupt map walk","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nof/irq: Prevent device address out-of-bounds read in interrupt map walk\n\nWhen of_irq_parse_raw() is invoked with a device address smaller than\nthe interrupt parent node (from #address-cells property), KASAN detects\nthe following out-of-bounds read when populating the initial match table\n(dyndbg=\"func of_irq_parse_* +p\"):\n\n  OF: of_irq_parse_one: dev=/soc@0/picasso/watchdog, index=0\n  OF:  parent=/soc@0/pci@878000000000/gpio0@17,0, intsize=2\n  OF:  intspec=4\n  OF: of_irq_parse_raw: ipar=/soc@0/pci@878000000000/gpio0@17,0, size=2\n  OF:  -\u003e addrsize=3\n  ==================================================================\n  BUG: KASAN: slab-out-of-bounds in of_irq_parse_raw+0x2b8/0x8d0\n  Read of size 4 at addr ffffff81beca5608 by task bash/764\n\n  CPU: 1 PID: 764 Comm: bash Tainted: G           O       6.1.67-484c613561-nokia_sm_arm64 #1\n  Hardware name: Unknown Unknown Product/Unknown Product, BIOS 2023.01-12.24.03-dirty 01/01/2023\n  Call trace:\n   dump_backtrace+0xdc/0x130\n   show_stack+0x1c/0x30\n   dump_stack_lvl+0x6c/0x84\n   print_report+0x150/0x448\n   kasan_report+0x98/0x140\n   __asan_load4+0x78/0xa0\n   of_irq_parse_raw+0x2b8/0x8d0\n   of_irq_parse_one+0x24c/0x270\n   parse_interrupts+0xc0/0x120\n   of_fwnode_add_links+0x100/0x2d0\n   fw_devlink_parse_fwtree+0x64/0xc0\n   device_add+0xb38/0xc30\n   of_device_add+0x64/0x90\n   of_platform_device_create_pdata+0xd0/0x170\n   of_platform_bus_create+0x244/0x600\n   of_platform_notify+0x1b0/0x254\n   blocking_notifier_call_chain+0x9c/0xd0\n   __of_changeset_entry_notify+0x1b8/0x230\n   __of_changeset_apply_notify+0x54/0xe4\n   of_overlay_fdt_apply+0xc04/0xd94\n   ...\n\n  The buggy address belongs to the object at ffffff81beca5600\n   which belongs to the cache kmalloc-128 of size 128\n  The buggy address is located 8 bytes inside of\n   128-byte region [ffffff81beca5600, ffffff81beca5680)\n\n  The buggy address belongs to the physical page:\n  page:00000000230d3d03 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1beca4\n  head:00000000230d3d03 order:1 compound_mapcount:0 compound_pincount:0\n  flags: 0x8000000000010200(slab|head|zone=2)\n  raw: 8000000000010200 0000000000000000 dead000000000122 ffffff810000c300\n  raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000\n  page dumped because: kasan: bad access detected\n\n  Memory state around the buggy address:\n   ffffff81beca5500: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n   ffffff81beca5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n  \u003effffff81beca5600: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n                        ^\n   ffffff81beca5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n   ffffff81beca5700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc\n  ==================================================================\n  OF:  -\u003e got it !\n\nPrevent the out-of-bounds read by copying the device address into a\nbuffer of sufficient size.","modified":"2026-03-20T12:39:07.637494Z","published":"2024-09-18T07:12:04.166Z","related":["MGASA-2024-0316","MGASA-2024-0318","SUSE-SU-2024:3551-1","SUSE-SU-2024:3553-1","SUSE-SU-2024:3559-1","SUSE-SU-2024:3561-1","SUSE-SU-2024:3564-1","SUSE-SU-2024:3566-1","SUSE-SU-2024:3569-1","SUSE-SU-2024:3587-1","SUSE-SU-2024:3591-1","SUSE-SU-2024:3592-1","SUSE-SU-2025:20073-1","SUSE-SU-2025:20077-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46743.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/7ead730af11ee7da107f16fc77995613c58d292d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8ff351ea12e918db1373b915c4c268815929cbe5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9d1e9f0876b03d74d44513a0ed3ed15ef8f2fed5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b739dffa5d570b411d4bdf4bb9b8dfd6b7d72305"},{"type":"WEB","url":"https://git.kernel.org/stable/c/baaf26723beab3a04da578d3008be3544f83758f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf68acd840b6a5bfd3777e0d5aaa204db6b461a9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d2a79494d8a5262949736fb2c3ac44d20a51b0d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/defcaa426ba0bc89ffdafb799d2e50b52f74ffc4"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46743.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-46743"},{"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":"cc9fd71c62f542233c412b5fabc1bbe0c4d5ad08"},{"fixed":"d2a79494d8a5262949736fb2c3ac44d20a51b0d8"},{"fixed":"defcaa426ba0bc89ffdafb799d2e50b52f74ffc4"},{"fixed":"9d1e9f0876b03d74d44513a0ed3ed15ef8f2fed5"},{"fixed":"baaf26723beab3a04da578d3008be3544f83758f"},{"fixed":"8ff351ea12e918db1373b915c4c268815929cbe5"},{"fixed":"7ead730af11ee7da107f16fc77995613c58d292d"},{"fixed":"bf68acd840b6a5bfd3777e0d5aaa204db6b461a9"},{"fixed":"b739dffa5d570b411d4bdf4bb9b8dfd6b7d72305"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-46743.json"}}],"schema_version":"1.7.5"}