CVE-2025-38221 (GCVE-0-2025-38221)
Vulnerability from cvelistv5
Published
2025-07-04 13:37
Modified
2025-08-09 14:20
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix out of bounds punch offset
Punching a hole with a start offset that exceeds max_end is not
permitted and will result in a negative length in the
truncate_inode_partial_folio() function while truncating the page cache,
potentially leading to undesirable consequences.
A simple reproducer:
truncate -s 9895604649994 /mnt/foo
xfs_io -c "pwrite 8796093022208 4096" /mnt/foo
xfs_io -c "fpunch 8796093022213 25769803777" /mnt/foo
kernel BUG at include/linux/highmem.h:275!
Oops: invalid opcode: 0000 [#1] SMP PTI
CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014
RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110
RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287
RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000
RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000
RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000
R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005
R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000
FS: 00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
truncate_inode_partial_folio+0x3dd/0x620
truncate_inode_pages_range+0x226/0x720
? bdev_getblk+0x52/0x3e0
? ext4_get_group_desc+0x78/0x150
? crc32c_arch+0xfd/0x180
? __ext4_get_inode_loc+0x18c/0x840
? ext4_inode_csum+0x117/0x160
? jbd2_journal_dirty_metadata+0x61/0x390
? __ext4_handle_dirty_metadata+0xa0/0x2b0
? kmem_cache_free+0x90/0x5a0
? jbd2_journal_stop+0x1d5/0x550
? __ext4_journal_stop+0x49/0x100
truncate_pagecache_range+0x50/0x80
ext4_truncate_page_cache_block_range+0x57/0x3a0
ext4_punch_hole+0x1fe/0x670
ext4_fallocate+0x792/0x17d0
? __count_memcg_events+0x175/0x2a0
vfs_fallocate+0x121/0x560
ksys_fallocate+0x51/0xc0
__x64_sys_fallocate+0x24/0x40
x64_sys_call+0x18d2/0x4170
do_syscall_64+0xa7/0x220
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Fix this by filtering out cases where the punching start offset exceeds
max_end.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/ext4/inode.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a4d60ba277ecd8a98c5a593cbc0ef2237c20a541",
"status": "affected",
"version": "33f61ecabb10098b63dad3b729552779379f900d",
"versionType": "git"
},
{
"lessThan": "28b62cb58fd014338f5004170f2e3a35bf0af238",
"status": "affected",
"version": "982bf37da09d078570650b691d9084f43805a5de",
"versionType": "git"
},
{
"lessThan": "b5e58bcd79625423487fa3ecba8e8411b5396327",
"status": "affected",
"version": "982bf37da09d078570650b691d9084f43805a5de",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/ext4/inode.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"lessThan": "6.15",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.4",
"versionStartIncluding": "6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16",
"versionStartIncluding": "6.15",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix out of bounds punch offset\n\nPunching a hole with a start offset that exceeds max_end is not\npermitted and will result in a negative length in the\ntruncate_inode_partial_folio() function while truncating the page cache,\npotentially leading to undesirable consequences.\n\nA simple reproducer:\n\n truncate -s 9895604649994 /mnt/foo\n xfs_io -c \"pwrite 8796093022208 4096\" /mnt/foo\n xfs_io -c \"fpunch 8796093022213 25769803777\" /mnt/foo\n\n kernel BUG at include/linux/highmem.h:275!\n Oops: invalid opcode: 0000 [#1] SMP PTI\n CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014\n RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110\n RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287\n RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000\n RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000\n RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000\n R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005\n R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000\n FS: 00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)\n knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n \u003cTASK\u003e\n truncate_inode_partial_folio+0x3dd/0x620\n truncate_inode_pages_range+0x226/0x720\n ? bdev_getblk+0x52/0x3e0\n ? ext4_get_group_desc+0x78/0x150\n ? crc32c_arch+0xfd/0x180\n ? __ext4_get_inode_loc+0x18c/0x840\n ? ext4_inode_csum+0x117/0x160\n ? jbd2_journal_dirty_metadata+0x61/0x390\n ? __ext4_handle_dirty_metadata+0xa0/0x2b0\n ? kmem_cache_free+0x90/0x5a0\n ? jbd2_journal_stop+0x1d5/0x550\n ? __ext4_journal_stop+0x49/0x100\n truncate_pagecache_range+0x50/0x80\n ext4_truncate_page_cache_block_range+0x57/0x3a0\n ext4_punch_hole+0x1fe/0x670\n ext4_fallocate+0x792/0x17d0\n ? __count_memcg_events+0x175/0x2a0\n vfs_fallocate+0x121/0x560\n ksys_fallocate+0x51/0xc0\n __x64_sys_fallocate+0x24/0x40\n x64_sys_call+0x18d2/0x4170\n do_syscall_64+0xa7/0x220\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by filtering out cases where the punching start offset exceeds\nmax_end."
}
],
"providerMetadata": {
"dateUpdated": "2025-08-09T14:20:12.668Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a4d60ba277ecd8a98c5a593cbc0ef2237c20a541"
},
{
"url": "https://git.kernel.org/stable/c/28b62cb58fd014338f5004170f2e3a35bf0af238"
},
{
"url": "https://git.kernel.org/stable/c/b5e58bcd79625423487fa3ecba8e8411b5396327"
}
],
"title": "ext4: fix out of bounds punch offset",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38221",
"datePublished": "2025-07-04T13:37:37.248Z",
"dateReserved": "2025-04-16T04:51:23.995Z",
"dateUpdated": "2025-08-09T14:20:12.668Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-38221\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-04T14:15:30.723\",\"lastModified\":\"2025-08-01T09:15:32.603\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix out of bounds punch offset\\n\\nPunching a hole with a start offset that exceeds max_end is not\\npermitted and will result in a negative length in the\\ntruncate_inode_partial_folio() function while truncating the page cache,\\npotentially leading to undesirable consequences.\\n\\nA simple reproducer:\\n\\n truncate -s 9895604649994 /mnt/foo\\n xfs_io -c \\\"pwrite 8796093022208 4096\\\" /mnt/foo\\n xfs_io -c \\\"fpunch 8796093022213 25769803777\\\" /mnt/foo\\n\\n kernel BUG at include/linux/highmem.h:275!\\n Oops: invalid opcode: 0000 [#1] SMP PTI\\n CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3\\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014\\n RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110\\n RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287\\n RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000\\n RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000\\n RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000\\n R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005\\n R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000\\n FS: 00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)\\n knlGS:0000000000000000\\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0\\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\n Call Trace:\\n \u003cTASK\u003e\\n truncate_inode_partial_folio+0x3dd/0x620\\n truncate_inode_pages_range+0x226/0x720\\n ? bdev_getblk+0x52/0x3e0\\n ? ext4_get_group_desc+0x78/0x150\\n ? crc32c_arch+0xfd/0x180\\n ? __ext4_get_inode_loc+0x18c/0x840\\n ? ext4_inode_csum+0x117/0x160\\n ? jbd2_journal_dirty_metadata+0x61/0x390\\n ? __ext4_handle_dirty_metadata+0xa0/0x2b0\\n ? kmem_cache_free+0x90/0x5a0\\n ? jbd2_journal_stop+0x1d5/0x550\\n ? __ext4_journal_stop+0x49/0x100\\n truncate_pagecache_range+0x50/0x80\\n ext4_truncate_page_cache_block_range+0x57/0x3a0\\n ext4_punch_hole+0x1fe/0x670\\n ext4_fallocate+0x792/0x17d0\\n ? __count_memcg_events+0x175/0x2a0\\n vfs_fallocate+0x121/0x560\\n ksys_fallocate+0x51/0xc0\\n __x64_sys_fallocate+0x24/0x40\\n x64_sys_call+0x18d2/0x4170\\n do_syscall_64+0xa7/0x220\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nFix this by filtering out cases where the punching start offset exceeds\\nmax_end.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: correcci\u00f3n de un desplazamiento de perforaci\u00f3n fuera de los l\u00edmites. Perforar un agujero con un desplazamiento inicial superior a max_end no est\u00e1 permitido y resultar\u00e1 en una longitud negativa en la funci\u00f3n truncate_inode_partial_folio() al truncar la cach\u00e9 de p\u00e1gina, lo que podr\u00eda tener consecuencias indeseables. Un simple reproductor: truncate -s 9895604649994 /mnt/foo xfs_io -c \\\"pwrite 8796093022208 4096\\\" /mnt/foo xfs_io -c \\\"fpunch 8796093022213 25769803777\\\" /mnt/foo kernel BUG at include/linux/highmem.h:275! Oops: invalid opcode: 0000 [#1] SMP PTI CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014 RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110 RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287 RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000 RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000 RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000 R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005 R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000 FS: 00007f4f63d0b780(0000) GS:ffff8880d337d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Rastreo de llamadas: truncate_inode_partial_folio+0x3dd/0x620 truncate_inode_pages_range+0x226/0x720 ? bdev_getblk+0x52/0x3e0 ? ext4_get_group_desc+0x78/0x150 ? crc32c_arch+0xfd/0x180 ? __ext4_get_inode_loc+0x18c/0x840 ? ext4_inode_csum+0x117/0x160 ? jbd2_journal_dirty_metadata+0x61/0x390 ? __ext4_handle_dirty_metadata+0xa0/0x2b0 ? kmem_cache_free+0x90/0x5a0 ? jbd2_journal_stop+0x1d5/0x550 ? __ext4_journal_stop+0x49/0x100 truncate_pagecache_range+0x50/0x80 ext4_truncate_page_cache_block_range+0x57/0x3a0 ext4_punch_hole+0x1fe/0x670 ext4_fallocate+0x792/0x17d0 ? __count_memcg_events+0x175/0x2a0 vfs_fallocate+0x121/0x560 ksys_fallocate+0x51/0xc0 __x64_sys_fallocate+0x24/0x40 x64_sys_call+0x18d2/0x4170 do_syscall_64+0xa7/0x220 entry_SYSCALL_64_after_hwframe+0x76/0x7e Solucione esto filtrando los casos en los que el desplazamiento de inicio de perforaci\u00f3n exceda max_end.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/28b62cb58fd014338f5004170f2e3a35bf0af238\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a4d60ba277ecd8a98c5a593cbc0ef2237c20a541\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b5e58bcd79625423487fa3ecba8e8411b5396327\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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