{"id":"CVE-2024-38598","state":"PUBLISHED","title":"md: fix resync softlockup when bitmap size is less than array size","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: fix resync softlockup when bitmap size is less than array size\n\nIs is reported that for dm-raid10, lvextend + lvchange --syncaction will\ntrigger following softlockup:\n\nkernel:watchdog: BUG: soft lockup - CPU#3 stuck for 26s! [mdX_resync:6976]\nCPU: 7 PID: 3588 Comm: mdX_resync Kdump: loaded Not tainted 6.9.0-rc4-next-20240419 #1\nRIP: 0010:_raw_spin_unlock_irq+0x13/0x30\nCall Trace:\n <TASK>\n md_bitmap_start_sync+0x6b/0xf0\n raid10_sync_request+0x25c/0x1b40 [raid10]\n md_do_sync+0x64b/0x1020\n md_thread+0xa7/0x170\n kthread+0xcf/0x100\n ret_from_fork+0x30/0x50\n ret_from_fork_asm+0x1a/0x30\n\nAnd the detailed process is as follows:\n\nmd_do_sync\n j = mddev->resync_min\n while (j < max_sectors)\n  sectors = raid10_sync_request(mddev, j, &skipped)\n   if (!md_bitmap_start_sync(..., &sync_blocks))\n    // md_bitmap_start_sync set sync_blocks to 0\n    return sync_blocks + sectors_skippe;\n  // sectors = 0;\n  j += sectors;\n  // j never change\n\nRoot cause is that commit 301867b1c168 (\"md/raid10: check\nslab-out-of-bounds in md_bitmap_get_counter\") return early from\nmd_bitmap_get_counter(), without setting returned blocks.\n\nFix this problem by always set returned blocks from\nmd_bitmap_get_counter\"(), as it used to be.\n\nNoted that this patch just fix the softlockup problem in kernel, the\ncase that bitmap size doesn't match array size still need to be fixed.","publishedAt":"2024-06-19T13:45:47.309Z","updatedAt":"2026-10-15T00:43:36.097Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"374fb914304d9b500721007f3837ea8f1f9a2418","status":"affected","lessThan":"d4b9c764d48fa41caa24cfb4275f3aa9fb4bd798","versionType":"git"},{"version":"b0b971fe7d61411ede63c3291764dbde1577ef2c","status":"affected","lessThan":"43771597feba89a839c5f893716df88ae5c237ce","versionType":"git"},{"version":"39fa14e824acfd470db4f42c354297456bd82b53","status":"affected","lessThan":"3f5b73ef8fd6268cbc968b308d8eafe56fda97f3","versionType":"git"},{"version":"a134dd582c0d5b6068efa308bd485cf1d00b3f65","status":"affected","lessThan":"69296914bfd508c85935bf5f711cad9b0fe78492","versionType":"git"},{"version":"be1a3ec63a840cc9e59a033acf154f56255699a1","status":"affected","lessThan":"71e8e4f288e74a896b6d9cd194f3bab12bd7a10f","versionType":"git"},{"version":"301867b1c16805aebbc306aafa6ecdc68b73c7e5","status":"affected","lessThan":"c9566b812c8f66160466cc1e29df6d3646add0b1","versionType":"git"},{"version":"301867b1c16805aebbc306aafa6ecdc68b73c7e5","status":"affected","lessThan":"5817f43ae1a118855676f57ef7ab50e37eac7482","versionType":"git"},{"version":"301867b1c16805aebbc306aafa6ecdc68b73c7e5","status":"affected","lessThan":"8bbc71315e0ae4bb7e37f8d43b915e1cb01a481b","versionType":"git"},{"version":"301867b1c16805aebbc306aafa6ecdc68b73c7e5","status":"affected","lessThan":"f0e729af2eb6bee9eb58c4df1087f14ebaefe26b","versionType":"git"},{"version":"152bb26796ff054af50b2ee1b3ca56e364e4f61b","status":"affected","versionType":"git"},{"version":"bea301c046110bf421a3ce153fb868cb8d618e90","status":"affected","versionType":"git"},{"version":"4.19.291","status":"affected","lessThan":"4.19.316","versionType":"semver"},{"version":"5.4.251","status":"affected","lessThan":"5.4.278","versionType":"semver"},{"version":"5.10.188","status":"affected","lessThan":"5.10.219","versionType":"semver"},{"version":"5.15.121","status":"affected","lessThan":"5.15.161","versionType":"semver"},{"version":"6.1.39","status":"affected","lessThan":"6.1.93","versionType":"semver"},{"version":"6.3.13","status":"affected","lessThan":"6.4","versionType":"semver"},{"version":"6.4.4","status":"affected","lessThan":"6.5","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md-bitmap.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"4.19.316","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.278","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.219","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.161","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.93","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.33","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.8.12","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9.3","status":"unaffected","lessThanOrEqual":"6.9.*","versionType":"semver"},{"version":"6.10","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md-bitmap.c"]}],"references":["https://git.kernel.org/stable/c/d4b9c764d48fa41caa24cfb4275f3aa9fb4bd798","https://git.kernel.org/stable/c/43771597feba89a839c5f893716df88ae5c237ce","https://git.kernel.org/stable/c/3f5b73ef8fd6268cbc968b308d8eafe56fda97f3","https://git.kernel.org/stable/c/69296914bfd508c85935bf5f711cad9b0fe78492","https://git.kernel.org/stable/c/71e8e4f288e74a896b6d9cd194f3bab12bd7a10f","https://git.kernel.org/stable/c/c9566b812c8f66160466cc1e29df6d3646add0b1","https://git.kernel.org/stable/c/5817f43ae1a118855676f57ef7ab50e37eac7482","https://git.kernel.org/stable/c/8bbc71315e0ae4bb7e37f8d43b915e1cb01a481b","https://git.kernel.org/stable/c/f0e729af2eb6bee9eb58c4df1087f14ebaefe26b","https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","https://cert-portal.siemens.com/productcert/html/ssa-398330.html","https://cert-portal.siemens.com/productcert/html/ssa-265688.html","https://cert-portal.siemens.com/productcert/html/ssa-613116.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/38xxx/CVE-2024-38598.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-38598","state":"PUBLISHED","datePublished":"2024-06-19T13:45:47.309Z","dateUpdated":"2026-10-15T00:43:36.097Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-06-18T19:36:34.932Z"},"containers":{"cna":{"title":"md: fix resync softlockup when bitmap size is less than array size","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: fix resync softlockup when bitmap size is less than array size\n\nIs is reported that for dm-raid10, lvextend + lvchange --syncaction will\ntrigger following softlockup:\n\nkernel:watchdog: BUG: soft lockup - CPU#3 stuck for 26s! [mdX_resync:6976]\nCPU: 7 PID: 3588 Comm: mdX_resync Kdump: loaded Not tainted 6.9.0-rc4-next-20240419 #1\nRIP: 0010:_raw_spin_unlock_irq+0x13/0x30\nCall Trace:\n <TASK>\n md_bitmap_start_sync+0x6b/0xf0\n raid10_sync_request+0x25c/0x1b40 [raid10]\n md_do_sync+0x64b/0x1020\n md_thread+0xa7/0x170\n kthread+0xcf/0x100\n ret_from_fork+0x30/0x50\n ret_from_fork_asm+0x1a/0x30\n\nAnd the detailed process is as follows:\n\nmd_do_sync\n j = mddev->resync_min\n while (j < max_sectors)\n  sectors = raid10_sync_request(mddev, j, &skipped)\n   if (!md_bitmap_start_sync(..., &sync_blocks))\n    // md_bitmap_start_sync set sync_blocks to 0\n    return sync_blocks + sectors_skippe;\n  // sectors = 0;\n  j += sectors;\n  // j never change\n\nRoot cause is that commit 301867b1c168 (\"md/raid10: check\nslab-out-of-bounds in md_bitmap_get_counter\") return early from\nmd_bitmap_get_counter(), without setting returned blocks.\n\nFix this problem by always set returned blocks from\nmd_bitmap_get_counter\"(), as it used to be.\n\nNoted that this patch just fix the softlockup problem in kernel, the\ncase that bitmap size doesn't match array size still need to be 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