CVE-2025-40244
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent() The syzbot reported issue in __hfsplus_ext_cache_extent(): [ 70.194323][ T9350] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x7d0/0x990 [ 70.195022][ T9350] __hfsplus_ext_cache_extent+0x7d0/0x990 [ 70.195530][ T9350] hfsplus_file_extend+0x74f/0x1cf0 [ 70.195998][ T9350] hfsplus_get_block+0xe16/0x17b0 [ 70.196458][ T9350] __block_write_begin_int+0x962/0x2ce0 [ 70.196959][ T9350] cont_write_begin+0x1000/0x1950 [ 70.197416][ T9350] hfsplus_write_begin+0x85/0x130 [ 70.197873][ T9350] generic_perform_write+0x3e8/0x1060 [ 70.198374][ T9350] __generic_file_write_iter+0x215/0x460 [ 70.198892][ T9350] generic_file_write_iter+0x109/0x5e0 [ 70.199393][ T9350] vfs_write+0xb0f/0x14e0 [ 70.199771][ T9350] ksys_write+0x23e/0x490 [ 70.200149][ T9350] __x64_sys_write+0x97/0xf0 [ 70.200570][ T9350] x64_sys_call+0x3015/0x3cf0 [ 70.201065][ T9350] do_syscall_64+0xd9/0x1d0 [ 70.201506][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.202054][ T9350] [ 70.202279][ T9350] Uninit was created at: [ 70.202693][ T9350] __kmalloc_noprof+0x621/0xf80 [ 70.203149][ T9350] hfsplus_find_init+0x8d/0x1d0 [ 70.203602][ T9350] hfsplus_file_extend+0x6ca/0x1cf0 [ 70.204087][ T9350] hfsplus_get_block+0xe16/0x17b0 [ 70.204561][ T9350] __block_write_begin_int+0x962/0x2ce0 [ 70.205074][ T9350] cont_write_begin+0x1000/0x1950 [ 70.205547][ T9350] hfsplus_write_begin+0x85/0x130 [ 70.206017][ T9350] generic_perform_write+0x3e8/0x1060 [ 70.206519][ T9350] __generic_file_write_iter+0x215/0x460 [ 70.207042][ T9350] generic_file_write_iter+0x109/0x5e0 [ 70.207552][ T9350] vfs_write+0xb0f/0x14e0 [ 70.207961][ T9350] ksys_write+0x23e/0x490 [ 70.208375][ T9350] __x64_sys_write+0x97/0xf0 [ 70.208810][ T9350] x64_sys_call+0x3015/0x3cf0 [ 70.209255][ T9350] do_syscall_64+0xd9/0x1d0 [ 70.209680][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.210230][ T9350] [ 70.210454][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Not tainted 6.12.0-rc5 #5 [ 70.211174][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 70.212115][ T9350] ===================================================== [ 70.212734][ T9350] Disabling lock debugging due to kernel taint [ 70.213284][ T9350] Kernel panic - not syncing: kmsan.panic set ... [ 70.213858][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Tainted: G B 6.12.0-rc5 #5 [ 70.214679][ T9350] Tainted: [B]=BAD_PAGE [ 70.215057][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 70.215999][ T9350] Call Trace: [ 70.216309][ T9350] <TASK> [ 70.216585][ T9350] dump_stack_lvl+0x1fd/0x2b0 [ 70.217025][ T9350] dump_stack+0x1e/0x30 [ 70.217421][ T9350] panic+0x502/0xca0 [ 70.217803][ T9350] ? kmsan_get_metadata+0x13e/0x1c0 [ 70.218294][ Message fromT sy9350] kmsan_report+0x296/slogd@syzkaller 0x2aat Aug 18 22:11:058 ... kernel :[ 70.213284][ T9350] Kernel panic - not syncing: kmsan.panic [ 70.220179][ T9350] ? kmsan_get_metadata+0x13e/0x1c0 set ... [ 70.221254][ T9350] ? __msan_warning+0x96/0x120 [ 70.222066][ T9350] ? __hfsplus_ext_cache_extent+0x7d0/0x990 [ 70.223023][ T9350] ? hfsplus_file_extend+0x74f/0x1cf0 [ 70.224120][ T9350] ? hfsplus_get_block+0xe16/0x17b0 [ 70.224946][ T9350] ? __block_write_begin_int+0x962/0x2ce0 [ 70.225756][ T9350] ? cont_write_begin+0x1000/0x1950 [ 70.226337][ T9350] ? hfsplus_write_begin+0x85/0x130 [ 70.226852][ T9350] ? generic_perform_write+0x3e8/0x1060 [ 70.227405][ T9350] ? __generic_file_write_iter+0x215/0x460 [ 70.227979][ T9350] ? generic_file_write_iter+0x109/0x5e0 [ 70.228540][ T9350] ? vfs_write+0xb0f/0x14e0 [ 70.228997][ T9350] ? ksys_write+0x23e/0x490 ---truncated---
View original CVE JSON
{
"id": "CVE-2025-40244",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-12-04T16:16:17.670",
"lastModified": "2026-10-19T19:10:00.130",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()\n\nThe syzbot reported issue in __hfsplus_ext_cache_extent():\n\n[ 70.194323][ T9350] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x7d0/0x990\n[ 70.195022][ T9350] __hfsplus_ext_cache_extent+0x7d0/0x990\n[ 70.195530][ T9350] hfsplus_file_extend+0x74f/0x1cf0\n[ 70.195998][ T9350] hfsplus_get_block+0xe16/0x17b0\n[ 70.196458][ T9350] __block_write_begin_int+0x962/0x2ce0\n[ 70.196959][ T9350] cont_write_begin+0x1000/0x1950\n[ 70.197416][ T9350] hfsplus_write_begin+0x85/0x130\n[ 70.197873][ T9350] generic_perform_write+0x3e8/0x1060\n[ 70.198374][ T9350] __generic_file_write_iter+0x215/0x460\n[ 70.198892][ T9350] generic_file_write_iter+0x109/0x5e0\n[ 70.199393][ T9350] vfs_write+0xb0f/0x14e0\n[ 70.199771][ T9350] ksys_write+0x23e/0x490\n[ 70.200149][ T9350] __x64_sys_write+0x97/0xf0\n[ 70.200570][ T9350] x64_sys_call+0x3015/0x3cf0\n[ 70.201065][ T9350] do_syscall_64+0xd9/0x1d0\n[ 70.201506][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[ 70.202054][ T9350]\n[ 70.202279][ T9350] Uninit was created at:\n[ 70.202693][ T9350] __kmalloc_noprof+0x621/0xf80\n[ 70.203149][ T9350] hfsplus_find_init+0x8d/0x1d0\n[ 70.203602][ T9350] hfsplus_file_extend+0x6ca/0x1cf0\n[ 70.204087][ T9350] hfsplus_get_block+0xe16/0x17b0\n[ 70.204561][ T9350] __block_write_begin_int+0x962/0x2ce0\n[ 70.205074][ T9350] cont_write_begin+0x1000/0x1950\n[ 70.205547][ T9350] hfsplus_write_begin+0x85/0x130\n[ 70.206017][ T9350] generic_perform_write+0x3e8/0x1060\n[ 70.206519][ T9350] __generic_file_write_iter+0x215/0x460\n[ 70.207042][ T9350] generic_file_write_iter+0x109/0x5e0\n[ 70.207552][ T9350] vfs_write+0xb0f/0x14e0\n[ 70.207961][ T9350] ksys_write+0x23e/0x490\n[ 70.208375][ T9350] __x64_sys_write+0x97/0xf0\n[ 70.208810][ T9350] x64_sys_call+0x3015/0x3cf0\n[ 70.209255][ T9350] do_syscall_64+0xd9/0x1d0\n[ 70.209680][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[ 70.210230][ T9350]\n[ 70.210454][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Not tainted 6.12.0-rc5 #5\n[ 70.211174][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 70.212115][ T9350] =====================================================\n[ 70.212734][ T9350] Disabling lock debugging due to kernel taint\n[ 70.213284][ T9350] Kernel panic - not syncing: kmsan.panic set ...\n[ 70.213858][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Tainted: G B 6.12.0-rc5 #5\n[ 70.214679][ T9350] Tainted: [B]=BAD_PAGE\n[ 70.215057][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 70.215999][ T9350] Call Trace:\n[ 70.216309][ T9350] <TASK>\n[ 70.216585][ T9350] dump_stack_lvl+0x1fd/0x2b0\n[ 70.217025][ T9350] dump_stack+0x1e/0x30\n[ 70.217421][ T9350] panic+0x502/0xca0\n[ 70.217803][ T9350] ? kmsan_get_metadata+0x13e/0x1c0\n\n[ 70.218294][ Message fromT sy9350] kmsan_report+0x296/slogd@syzkaller 0x2aat Aug 18 22:11:058 ...\n kernel\n:[ 70.213284][ T9350] Kernel panic - not syncing: kmsan.panic [ 70.220179][ T9350] ? kmsan_get_metadata+0x13e/0x1c0\nset ...\n[ 70.221254][ T9350] ? __msan_warning+0x96/0x120\n[ 70.222066][ T9350] ? __hfsplus_ext_cache_extent+0x7d0/0x990\n[ 70.223023][ T9350] ? hfsplus_file_extend+0x74f/0x1cf0\n[ 70.224120][ T9350] ? hfsplus_get_block+0xe16/0x17b0\n[ 70.224946][ T9350] ? __block_write_begin_int+0x962/0x2ce0\n[ 70.225756][ T9350] ? cont_write_begin+0x1000/0x1950\n[ 70.226337][ T9350] ? hfsplus_write_begin+0x85/0x130\n[ 70.226852][ T9350] ? generic_perform_write+0x3e8/0x1060\n[ 70.227405][ T9350] ? __generic_file_write_iter+0x215/0x460\n[ 70.227979][ T9350] ? generic_file_write_iter+0x109/0x5e0\n[ 70.228540][ T9350] ? vfs_write+0xb0f/0x14e0\n[ 70.228997][ T9350] ? ksys_write+0x23e/0x490\n---truncated---"
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nhfsplus: corrige el problema de valor no inicializado de KMSAN en __hfsplus_ext_cache_extent()\n\nEl problema reportado por syzbot en __hfsplus_ext_cache_extent():\n\n[ 70.194323][ T9350] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x7d0/0x990\n[ 70.195022][ T9350] __hfsplus_ext_cache_extent+0x7d0/0x990\n[ 70.195530][ T9350] hfsplus_file_extend+0x74f/0x1cf0\n[ 70.195998][ T9350] hfsplus_get_block+0xe16/0x17b0\n[ 70.196458][ T9350] __block_write_begin_int+0x962/0x2ce0\n[ 70.196959][ T9350] cont_write_begin+0x1000/0x1950\n[ 70.197416][ T9350] hfsplus_write_begin+0x85/0x130\n[ 70.197873][ T9350] generic_perform_write+0x3e8/0x1060\n[ 70.198374][ T9350] __generic_file_write_iter+0x215/0x460\n[ 70.198892][ T9350] generic_file_write_iter+0x109/0x5e0\n[ 70.199393][ T9350] vfs_write+0xb0f/0x14e0\n[ 70.199771][ T9350] ksys_write+0x23e/0x490\n[ 70.200149][ T9350] __x64_sys_write+0x97/0xf0\n[ 70.200570][ T9350] x64_sys_call+0x3015/0x3cf0\n[ 70.201065][ T9350] do_syscall_64+0xd9/0x1d0\n[ 70.201506][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[ 70.202054][ T9350]\n[ 70.202279][ T9350] El valor no inicializado fue creado en:\n[ 70.202693][ T9350] __kmalloc_noprof+0x621/0xf80\n[ 70.203149][ T9350] hfsplus_find_init+0x8d/0x1d0\n[ 70.203602][ T9350] hfsplus_file_extend+0x6ca/0x1cf0\n[ 70.204087][ T9350] hfsplus_get_block+0xe16/0x17b0\n[ 70.204561][ T9350] __block_write_begin_int+0x962/0x2ce0\n[ 70.205074][ T9350] cont_write_begin+0x1000/0x1950\n[ 70.205547][ T9350] hfsplus_write_begin+0x85/0x130\n[ 70.206017][ T9350] generic_perform_write+0x3e8/0x1060\n[ 70.206519][ T9350] __generic_file_write_iter+0x215/0x460\n[ 70.207042][ T9350] generic_file_write_iter+0x109/0x5e0\n[ 70.207552][ T9350] vfs_write+0xb0f/0x14e0\n[ 70.207961][ T9350] ksys_write+0x23e/0x490\n[ 70.208375][ T9350] __x64_sys_write+0x97/0xf0\n[ 70.208810][ T9350] x64_sys_call+0x3015/0x3cf0\n[ 70.209255][ T9350] do_syscall_64+0xd9/0x1d0\n[ 70.209680][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[ 70.210230][ T9350]\n[ 70.210454][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Not tainted 6.12.0-rc5 #5\n[ 70.211174][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 70.212115][ T9350] =====================================================\n[ 70.212734][ T9350] Deshabilitando la depuración de bloqueos debido a la contaminación del kernel\n[ 70.213284][ T9350] Panic del kernel - no sincronizando: kmsan.panic establecido ...\n[ 70.213858][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Tainted: G B 6.12.0-rc5 #5\n[ 70.214679][ T9350] Tainted: [B]=BAD_PAGE\n[ 70.215057][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 70.215999][ T9350] Traza de llamada:\n[ 70.216309][ T9350] <TASK>\n[ 70.216585][ T9350] dump_stack_lvl+0x1fd/0x2b0\n[ 70.217025][ T9350] dump_stack+0x1e/0x30\n[ 70.217421][ T9350] panic+0x502/0xca0\n[ 70.217803][ T9350] ? kmsan_get_metadata+0x13e/0x1c0\n\n[ 70.218294][ Mensaje de syzbot T sy9350] kmsan_report+0x296/slogd@syzkaller 0x2aat Aug 18 22:11:058 ... kernel\n:[ 70.213284][ T9350] Panic del kernel - no sincronizando: kmsan.panic [ 70.220179][ T9350] ? kmsan_get_metadata+0x13e/0x1c0\nestablecido ...\n[ 70.221254][ T9350] ? __msan_warning+0x96/0x120\n[ 70.222066][ T9350] ? __hfsplus_ext_cache_extent+0x7d0/0x990\n[ 70.223023][ T9350] ? hfsplus_file_extend+0x74f/0x1cf0\n[ 70.224120][ T9350] ? hfsplus_get_block+0xe16/0x17b0\n[ 70.224946][ T9350] ? __block_write_begin_int+0x962/0x2ce0\n[ 70.225756][ T9350] ? cont_write_begin+0x1000/0x1950\n[ 70.226337][ T9350] ? hfsplus_write_begin+0x85/0x130\n[ 70.226852][ T9350] ? generic_perform_write+0x3e8/0x1060\n[ 70.227405][ T9350] ? __generic_file_write_iter+0x215/0x460\n[ 70.227979][ T9350] ? generic_file_write_iter+0x109/0x5e0\n[ 70.228540][ T9350] ? vfs_write+0xb0f/0x14e0\n[ 70.228997][ --TRUNCADO--"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"fs/hfsplus/bfind.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "c1ec90bed504640a42bb20a5f413be39cd17ad71",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "b8a72692aa42b7dcd179a96b90bc2763ac74576a",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "c135b8dca65526aa5b8814e9954e0ae317d9c598",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "d7e313039a8f3a6ee072dc5ff4643234d2d735cf",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "a5bfb13b4f406aef1a450f99d22d3e48df01528c",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "99202d94909d323a30d154ab0261c0a07166daec",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "14c673a2f3ecf650b694a52a88688f1d71849899",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "4840ceadef4290c56cc422f0fc697655f3cbf070",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"fs/hfsplus/bfind.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "2.6.12",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.12",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.4.301",
"lessThanOrEqual": "5.4.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.246",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.196",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.158",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.115",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.56",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.17.6",
"lessThanOrEqual": "6.17.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
]
},
"references": [
{
"url": "https://git.kernel.org/stable/c/14c673a2f3ecf650b694a52a88688f1d71849899",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/4840ceadef4290c56cc422f0fc697655f3cbf070",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/99202d94909d323a30d154ab0261c0a07166daec",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a5bfb13b4f406aef1a450f99d22d3e48df01528c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b8a72692aa42b7dcd179a96b90bc2763ac74576a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c135b8dca65526aa5b8814e9954e0ae317d9c598",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c1ec90bed504640a42bb20a5f413be39cd17ad71",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d7e313039a8f3a6ee072dc5ff4643234d2d735cf",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}