{"id":"CVE-2024-41000","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock/ioctl: prefer different overflow check\n\nRunning syzkaller with the newly reintroduced signed integer overflow\nsanitizer shows this report:\n\n[   62.982337] -------…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock/ioctl: prefer different overflow check\n\nRunning syzkaller with the newly reintroduced signed integer overflow\nsanitizer shows this report:\n\n[   62.982337] -------…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-190"],"vendor":"debian","product":"debian_linux","affected":["debian_linux = 11.0","linux_kernel >= 5.10.215, < 5.10.221","linux_kernel >= 5.15.148, < 5.15.162","linux_kernel >= 6.1.75, < 6.1.96","linux_kernel >= 6.6.14, < 6.6.36","linux_kernel >= 6.7.2, < 6.9.7"],"patched":["linux_kernel 6.9.7"],"published":"2024-07-12","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:18:40.570","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-41000","references":[{"url":"https://git.kernel.org/stable/c/3220c90f4dbdc6d20d0608b164d964434a810d66","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/54160fb1db2de367485f21e30196c42f7ee0be4e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/58706e482bf45c4db48b0c53aba2468c97adda24","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/61ec76ec930709b7bcd69029ef1fe90491f20cf9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ccb326b5f9e623eb7f130fbbf2505ec0e2dcaff9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fd841ee01fb4a79cb7f5cc424b5c96c3a73b2d1e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3220c90f4dbdc6d20d0608b164d964434a810d66","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/54160fb1db2de367485f21e30196c42f7ee0be4e","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/58706e482bf45c4db48b0c53aba2468c97adda24","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/61ec76ec930709b7bcd69029ef1fe90491f20cf9","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/ccb326b5f9e623eb7f130fbbf2505ec0e2dcaff9","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/fd841ee01fb4a79cb7f5cc424b5c96c3a73b2d1e","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-355557.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-613116.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00302,"epssPercentile":0.213,"ingestedAt":"2026-10-15T03:30:12.725Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-09-10T17:01:19.374759Z"},"slug":"CVE-2024-41000","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nblock/ioctl: prefer different overflow check\n\nRunning syzkaller with the newly reintroduced signed integer overflow\nsanitizer shows this report:\n\n[   62.982337] ------------[ cut here ]------------\n[   62.985692] cgroup: Invalid name\n[   62.986211] UBSAN: signed-integer-overflow in ../block/ioctl.c:36:46\n[   62.989370] 9pnet_fd: p9_fd_create_tcp (7343): problem connecting socket to 127.0.0.1\n[   62.992992] 9223372036854775807 + 4095 cannot be represented in type 'long long'\n[   62.997827] 9pnet_fd: p9_fd_create_tcp (7345): problem connecting socket to 127.0.0.1\n[   62.999369] random: crng reseeded on system resumption\n[   63.000634] GUP no longer grows the stack in syz-executor.2 (7353): 20002000-20003000 (20001000)\n[   63.000668] CPU: 0 PID: 7353 Comm: syz-executor.2 Not tainted 6.8.0-rc2-00035-gb3ef86b5a957 #1\n[   63.000677] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[   63.000682] Call Trace:\n[   63.000686]  <TASK>\n[   63.000731]  dump_stack_lvl+0x93/0xd0\n[   63.000919]  __get_user_pages+0x903/0xd30\n[   63.001030]  __gup_longterm_locked+0x153e/0x1ba0\n[   63.001041]  ? _raw_read_unlock_irqrestore+0x17/0x50\n[   63.001072]  ? try_get_folio+0x29c/0x2d0\n[   63.001083]  internal_get_user_pages_fast+0x1119/0x1530\n[   63.001109]  iov_iter_extract_pages+0x23b/0x580\n[   63.001206]  bio_iov_iter_get_pages+0x4de/0x1220\n[   63.001235]  iomap_dio_bio_iter+0x9b6/0x1410\n[   63.001297]  __iomap_dio_rw+0xab4/0x1810\n[   63.001316]  iomap_dio_rw+0x45/0xa0\n[   63.001328]  ext4_file_write_iter+0xdde/0x1390\n[   63.001372]  vfs_write+0x599/0xbd0\n[   63.001394]  ksys_write+0xc8/0x190\n[   63.001403]  do_syscall_64+0xd4/0x1b0\n[   63.001421]  ? arch_exit_to_user_mode_prepare+0x3a/0x60\n[   63.001479]  entry_SYSCALL_64_after_hwframe+0x6f/0x77\n[   63.001535] RIP: 0033:0x7f7fd3ebf539\n[   63.001551] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\n[   63.001562] RSP: 002b:00007f7fd32570c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\n[   63.001584] RAX: ffffffffffffffda RBX: 00007f7fd3ff3f80 RCX: 00007f7fd3ebf539\n[   63.001590] RDX: 4db6d1e4f7e43360 RSI: 0000000020000000 RDI: 0000000000000004\n[   63.001595] RBP: 00007f7fd3f1e496 R08: 0000000000000000 R09: 0000000000000000\n[   63.001599] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\n[   63.001604] R13: 0000000000000006 R14: 00007f7fd3ff3f80 R15: 00007ffd415ad2b8\n...\n[   63.018142] ---[ end trace ]---\n\nHistorically, the signed integer overflow sanitizer did not work in the\nkernel due to its interaction with `-fwrapv` but this has since been\nchanged [1] in the newest version of Clang; It was re-enabled in the\nkernel with Commit 557f8c582a9ba8ab (\"ubsan: Reintroduce signed overflow\nsanitizer\").\n\nLet's rework this overflow checking logic to not actually perform an\noverflow during the check itself, thus avoiding the UBSAN splat.\n\n[1]: https://github.com/llvm/llvm-project/pull/82432\n\n## Affected\n\n- `debian_linux = 11.0`\n- `linux_kernel >= 5.10.215, < 5.10.221`\n- `linux_kernel >= 5.15.148, < 5.15.162`\n- `linux_kernel >= 6.1.75, < 6.1.96`\n- `linux_kernel >= 6.6.14, < 6.6.36`\n- `linux_kernel >= 6.7.2, < 6.9.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.9.7`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}