{"id":"CVE-2024-36916","state":"PUBLISHED","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 <IRQ>\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.","publishedAt":"2024-05-30T15:29:12.745Z","updatedAt":"2026-10-15T00:42:47.842Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"62accf6c1d7b433752cb3591bba8967b7a801ad5","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"ce0e99cae00e3131872936713b7f55eefd53ab86","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"488dc6808cb8369685f18cee81e88e7052ac153b","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"beaa51b36012fad5a4d3c18b88a617aea7a9b96d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-iocost.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.217","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.159","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.91","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.31","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.8.10","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-iocost.c"]}],"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","https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html","https://security.netapp.com/advisory/ntap-20240905-0006/","https://cert-portal.siemens.com/productcert/html/ssa-265688.html","https://cert-portal.siemens.com/productcert/html/ssa-613116.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:30.303Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/36xxx/CVE-2024-36916.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-36916","state":"PUBLISHED","datePublished":"2024-05-30T15:29:12.745Z","dateUpdated":"2026-10-15T00:42:47.842Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-30T15:25:07.068Z"},"containers":{"cna":{"title":"blk-iocost: avoid out of bounds shift","descriptions":[{"lang":"en","value":"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 <IRQ>\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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"62accf6c1d7b433752cb3591bba8967b7a801ad5","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"ce0e99cae00e3131872936713b7f55eefd53ab86","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"488dc6808cb8369685f18cee81e88e7052ac153b","versionType":"git"},{"version":"5160a5a53c0c4ae3708959d9465ea43ad5d90542","status":"affected","lessThan":"beaa51b36012fad5a4d3c18b88a617aea7a9b96d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-iocost.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.217","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.159","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.91","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.31","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.8.10","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-iocost.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5"},{"url":"https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1"},{"url":"https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca"},{"url":"https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86"},{"url":"https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b"},{"url":"https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:16:58.208Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.217"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.31"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.8.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA 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