{"id":"CVE-2024-36916","revision":null,"records":[{"revision":"bdf83dcf0c404d67bcef2f575040a4d7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-36916","aliases":[],"title":"blk-iocost: avoid out of bounds shift","description":"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->delay 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 \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.","state":0,"publishedAt":"2024-05-30T15:29:12.745+00:00","modifiedAt":"2026-10-15T00:42:47.842+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"block/blk-iocost.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5160a5a53c0c4ae3708959d9465ea43ad5d90542\",\n \"lessThan\": \"62accf6c1d7b433752cb3591bba8967b7a801ad5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5160a5a53c0c4ae3708959d9465ea43ad5d90542\",\n \"lessThan\": \"844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5160a5a53c0c4ae3708959d9465ea43ad5d90542\",\n \"lessThan\": \"f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5160a5a53c0c4ae3708959d9465ea43ad5d90542\",\n \"lessThan\": \"ce0e99cae00e3131872936713b7f55eefd53ab86\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5160a5a53c0c4ae3708959d9465ea43ad5d90542\",\n \"lessThan\": \"488dc6808cb8369685f18cee81e88e7052ac153b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5160a5a53c0c4ae3708959d9465ea43ad5d90542\",\n \"lessThan\": \"beaa51b36012fad5a4d3c18b88a617aea7a9b96d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"block/blk-iocost.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.10\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.10\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.217\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.159\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.91\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.31\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.8.10\",\n \"lessThanOrEqual\": \"6.8.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.9\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5","https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1","https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca","https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86","https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b","https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-36916","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-36916","identifiers":["CVE-2024-36916"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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