{"id":"CVE-2024-36916","summary":"blk-iocost: avoid out of bounds shift","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nblk-iocost: avoid out of bounds shift\n\nUBSAN catches undefined behavior in blk-iocost, where sometimes\niocg-\u003edelay is shifted right by a number that is too large,\nresulting in undefined behavior on some architectures.\n\n[  186.556576] ------------[ cut here ]------------\nUBSAN: shift-out-of-bounds in block/blk-iocost.c:1366:23\nshift exponent 64 is too large for 64-bit type 'u64' (aka 'unsigned long long')\nCPU: 16 PID: 0 Comm: swapper/16 Tainted: G S          E    N 6.9.0-0_fbk700_debug_rc2_kbuilder_0_gc85af715cac0 #1\nHardware name: Quanta Twin Lakes MP/Twin Lakes Passive MP, BIOS F09_3A23 12/08/2020\nCall Trace:\n \u003cIRQ\u003e\n dump_stack_lvl+0x8f/0xe0\n __ubsan_handle_shift_out_of_bounds+0x22c/0x280\n iocg_kick_delay+0x30b/0x310\n ioc_timer_fn+0x2fb/0x1f80\n __run_timer_base+0x1b6/0x250\n...\n\nAvoid that undefined behavior by simply taking the\n\"delay = 0\" branch if the shift is too large.\n\nI am not sure what the symptoms of an undefined value\ndelay will be, but I suspect it could be more than a\nlittle annoying to debug.","modified":"2026-03-20T12:36:52.418116Z","published":"2024-05-30T15:29:12.745Z","related":["MGASA-2024-0263","MGASA-2024-0266","SUSE-SU-2024:2372-1","SUSE-SU-2024:2394-1","SUSE-SU-2024:2571-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2939-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36916.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36916.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-36916"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20240905-0006/"},{"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":"5160a5a53c0c4ae3708959d9465ea43ad5d90542"},{"fixed":"62accf6c1d7b433752cb3591bba8967b7a801ad5"},{"fixed":"844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1"},{"fixed":"f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca"},{"fixed":"ce0e99cae00e3131872936713b7f55eefd53ab86"},{"fixed":"488dc6808cb8369685f18cee81e88e7052ac153b"},{"fixed":"beaa51b36012fad5a4d3c18b88a617aea7a9b96d"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-36916.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"}]}