CVE-2024-41000

{"id": "CVE-2024-41000", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-07-12T13:15:20.987", "references": [{"url": "https://git.kernel.org/stable/c/3220c90f4dbdc6d20d0608b164d964434a810d66", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/54160fb1db2de367485f21e30196c42f7ee0be4e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/58706e482bf45c4db48b0c53aba2468c97adda24", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/61ec76ec930709b7bcd69029ef1fe90491f20cf9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ccb326b5f9e623eb7f130fbbf2505ec0e2dcaff9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fd841ee01fb4a79cb7f5cc424b5c96c3a73b2d1e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "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] ------------[ 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"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: block/ioctl: prefiero una verificaci\u00f3n de desbordamiento diferente. La ejecuci\u00f3n de syzkaller con el sanitizante de desbordamiento de enteros con signo recientemente reintroducido muestra este informe: [62.982337] ------------[ corte aqu\u00ed ]------------ [ 62.985692] cgroup: Nombre no v\u00e1lido [ 62.986211] UBSAN: desbordamiento de entero con signo en ../block/ioctl.c:36:46 [ 62.989370] 9pnet_fd: p9_fd_create_tcp (7343): problema al conectar el socket a 127.0.0.1 [62.992992] 9223372036854775807 + 4095 no se puede representar en el tipo 'long long' [62.997827] 9pnet_fd: p9_fd_create_tcp (7345): problema al conectar el socket 1 27.0.0.1 [62.999369] aleatorio: crng resembrado al reanudarse el sistema [63.000634] GUP ya no aumenta la pila en syz-executor.2 (7353): 20002000-20003000 (20001000) [63.000668] CPU: 0 PID: 7353 Comm: syz-executor.2 No contaminado 6.8.0 -rc2-00035-gb3ef86b5a957 #1 [ 63.000677] Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 01/04/2014 [ 63.000682] Seguimiento de llamadas: [ 63.000686 ] [ 63.000731] dump_stack_lvl+0x93/0xd0 [ 63.000919] __get_user_pages+0x903/0xd30 [ 63.001030] __gup_longterm_locked+0x153e/0x1ba0 [ 63.001041] ? _raw_read_unlock_irqrestore+0x17/0x50 [63.001072]? try_get_folio+0x29c/0x2d0 [ 63.001083] internal_get_user_pages_fast+0x1119/0x1530 [ 63.001109] iov_iter_extract_pages+0x23b/0x580 [ 63.001206] 0 [ 63.001235] iomap_dio_bio_iter+0x9b6/0x1410 [ 63.001297] __iomap_dio_rw+0xab4/0x1810 [ 63.001316] iomap_dio_rw+ 0x45/0xa0 [ 63.001328] ext4_file_write_iter+0xdde/0x1390 [ 63.001372] vfs_write+0x599/0xbd0 [ 63.001394] ksys_write+0xc8/0x190 [ 63.001403] 0xd4/0x1b0 [63.001421] ? arch_exit_to_user_mode_prepare+0x3a/0x60 [ 63.001479] Entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 63.001535] RIP: 0033:0x7f7fd3ebf539 [ 63.001551] C\u00f3digo: 28 00 00 00 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 &lt;48&gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 63.001562] RSP: b:00007f7fd32570c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 63.001584] RAX: ffffffffffffffda RBX: 00007f7fd3ff3f80 RCX: 00007f7fd3ebf539 [ 63.001590] RDX: 4f7e43360 RSI: 0000000020000000 RDI: 0000000000000004 [ 63.001595] RBP: 00007f7fd3f1e496 R08: 0000000000000000 R09: 00000000000000000 [ 63.001599] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 63.001604] R13: 0000000000000006 R14: 00007f7fd3ff3f80 R15: 00007ffd415ad2b8 ... [ 63.018142] ---[ end trace ]--- Hist\u00f3ricamente, el sanitizante de desbordamiento de enteros con signo no funcionaba en el kernel debido a su interacci\u00f3n con `-fwrapv` pero esto se ha cambiado desde entonces [1] en la versi\u00f3n m\u00e1s reciente de Clang; Se volvi\u00f3 a habilitar en el kernel con el commit 557f8c582a9ba8ab (\"ubsan: reintroducir el sanitizante de desbordamiento firmado\"). Modifiquemos esta l\u00f3gica de verificaci\u00f3n de desbordamiento para no realizar un desbordamiento durante la verificaci\u00f3n en s\u00ed, evitando as\u00ed el s\u00edmbolo de UBSAN. [1]: https://github.com/llvm/llvm-project/pull/82432"}], "lastModified": "2024-08-21T16:17:13.427", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C6FAA8A5-3F50-4B9F-9EEA-8430F59C03AB", "versionEndExcluding": "5.10.221"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "10A39ACC-3005-40E8-875C-98A372D1FFD5", "versionEndExcluding": "5.15.162", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "61E887B4-732A-40D2-9983-CC6F281EBFB7", "versionEndExcluding": "6.1.96", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E1046C95-860A-45B0-B718-2B29F65BFF10", "versionEndExcluding": "6.6.36", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C", "versionEndExcluding": "6.9.7", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}