CVE-2025-21984 (GCVE-0-2025-21984)
Vulnerability from cvelistv5 – Published: 2025-04-01 15:47 – Updated: 2025-10-01 17:14
VLAI?
Title
mm: fix kernel BUG when userfaultfd_move encounters swapcache
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm: fix kernel BUG when userfaultfd_move encounters swapcache
userfaultfd_move() checks whether the PTE entry is present or a
swap entry.
- If the PTE entry is present, move_present_pte() handles folio
migration by setting:
src_folio->index = linear_page_index(dst_vma, dst_addr);
- If the PTE entry is a swap entry, move_swap_pte() simply copies
the PTE to the new dst_addr.
This approach is incorrect because, even if the PTE is a swap entry,
it can still reference a folio that remains in the swap cache.
This creates a race window between steps 2 and 4.
1. add_to_swap: The folio is added to the swapcache.
2. try_to_unmap: PTEs are converted to swap entries.
3. pageout: The folio is written back.
4. Swapcache is cleared.
If userfaultfd_move() occurs in the window between steps 2 and 4,
after the swap PTE has been moved to the destination, accessing the
destination triggers do_swap_page(), which may locate the folio in
the swapcache. However, since the folio's index has not been updated
to match the destination VMA, do_swap_page() will detect a mismatch.
This can result in two critical issues depending on the system
configuration.
If KSM is disabled, both small and large folios can trigger a BUG
during the add_rmap operation due to:
page_pgoff(folio, page) != linear_page_index(vma, address)
[ 13.336953] page: refcount:6 mapcount:1 mapping:00000000f43db19c index:0xffffaf150 pfn:0x4667c
[ 13.337520] head: order:2 mapcount:1 entire_mapcount:0 nr_pages_mapped:1 pincount:0
[ 13.337716] memcg:ffff00000405f000
[ 13.337849] anon flags: 0x3fffc0000020459(locked|uptodate|dirty|owner_priv_1|head|swapbacked|node=0|zone=0|lastcpupid=0xffff)
[ 13.338630] raw: 03fffc0000020459 ffff80008507b538 ffff80008507b538 ffff000006260361
[ 13.338831] raw: 0000000ffffaf150 0000000000004000 0000000600000000 ffff00000405f000
[ 13.339031] head: 03fffc0000020459 ffff80008507b538 ffff80008507b538 ffff000006260361
[ 13.339204] head: 0000000ffffaf150 0000000000004000 0000000600000000 ffff00000405f000
[ 13.339375] head: 03fffc0000000202 fffffdffc0199f01 ffffffff00000000 0000000000000001
[ 13.339546] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 13.339736] page dumped because: VM_BUG_ON_PAGE(page_pgoff(folio, page) != linear_page_index(vma, address))
[ 13.340190] ------------[ cut here ]------------
[ 13.340316] kernel BUG at mm/rmap.c:1380!
[ 13.340683] Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
[ 13.340969] Modules linked in:
[ 13.341257] CPU: 1 UID: 0 PID: 107 Comm: a.out Not tainted 6.14.0-rc3-gcf42737e247a-dirty #299
[ 13.341470] Hardware name: linux,dummy-virt (DT)
[ 13.341671] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 13.341815] pc : __page_check_anon_rmap+0xa0/0xb0
[ 13.341920] lr : __page_check_anon_rmap+0xa0/0xb0
[ 13.342018] sp : ffff80008752bb20
[ 13.342093] x29: ffff80008752bb20 x28: fffffdffc0199f00 x27: 0000000000000001
[ 13.342404] x26: 0000000000000000 x25: 0000000000000001 x24: 0000000000000001
[ 13.342575] x23: 0000ffffaf0d0000 x22: 0000ffffaf0d0000 x21: fffffdffc0199f00
[ 13.342731] x20: fffffdffc0199f00 x19: ffff000006210700 x18: 00000000ffffffff
[ 13.342881] x17: 6c203d2120296567 x16: 6170202c6f696c6f x15: 662866666f67705f
[ 13.343033] x14: 6567617028454741 x13: 2929737365726464 x12: ffff800083728ab0
[ 13.343183] x11: ffff800082996bf8 x10: 0000000000000fd7 x9 : ffff80008011bc40
[ 13.343351] x8 : 0000000000017fe8 x7 : 00000000fffff000 x6 : ffff8000829eebf8
[ 13.343498] x5 : c0000000fffff000 x4 : 0000000000000000 x3 : 0000000000000000
[ 13.343645] x2 : 0000000000000000 x1 : ffff0000062db980 x0 : 000000000000005f
[ 13.343876] Call trace:
[ 13.344045] __page_check_anon_rmap+0xa0/0xb0 (P)
[ 13.344234] folio_add_anon_rmap_ptes+0x22c/0x320
[ 13.344333] do_swap_page+0x1060/0x1400
[ 13.344417] __handl
---truncated---
Severity ?
4.7 (Medium)
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
adef440691bab824e39c1b17382322d195e1fab0 , < 4e9507246298fd6f1ca7bb42ef01a6e34fb93684
(git)
Affected: adef440691bab824e39c1b17382322d195e1fab0 , < b1e11bd86c0943bb7624efebdc384340a50ad683 (git) Affected: adef440691bab824e39c1b17382322d195e1fab0 , < c50f8e6053b0503375c2975bf47f182445aebb4c (git) |
||
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2025-21984",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T17:14:21.959942Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-362",
"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T17:14:24.524Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"mm/userfaultfd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "4e9507246298fd6f1ca7bb42ef01a6e34fb93684",
"status": "affected",
"version": "adef440691bab824e39c1b17382322d195e1fab0",
"versionType": "git"
},
{
"lessThan": "b1e11bd86c0943bb7624efebdc384340a50ad683",
"status": "affected",
"version": "adef440691bab824e39c1b17382322d195e1fab0",
"versionType": "git"
},
{
"lessThan": "c50f8e6053b0503375c2975bf47f182445aebb4c",
"status": "affected",
"version": "adef440691bab824e39c1b17382322d195e1fab0",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"mm/userfaultfd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.20",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"version": "6.13.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.20",
"versionStartIncluding": "6.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.13.8",
"versionStartIncluding": "6.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.14",
"versionStartIncluding": "6.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: fix kernel BUG when userfaultfd_move encounters swapcache\n\nuserfaultfd_move() checks whether the PTE entry is present or a\nswap entry.\n\n- If the PTE entry is present, move_present_pte() handles folio\n migration by setting:\n\n src_folio-\u003eindex = linear_page_index(dst_vma, dst_addr);\n\n- If the PTE entry is a swap entry, move_swap_pte() simply copies\n the PTE to the new dst_addr.\n\nThis approach is incorrect because, even if the PTE is a swap entry,\nit can still reference a folio that remains in the swap cache.\n\nThis creates a race window between steps 2 and 4.\n 1. add_to_swap: The folio is added to the swapcache.\n 2. try_to_unmap: PTEs are converted to swap entries.\n 3. pageout: The folio is written back.\n 4. Swapcache is cleared.\nIf userfaultfd_move() occurs in the window between steps 2 and 4,\nafter the swap PTE has been moved to the destination, accessing the\ndestination triggers do_swap_page(), which may locate the folio in\nthe swapcache. However, since the folio\u0027s index has not been updated\nto match the destination VMA, do_swap_page() will detect a mismatch.\n\nThis can result in two critical issues depending on the system\nconfiguration.\n\nIf KSM is disabled, both small and large folios can trigger a BUG\nduring the add_rmap operation due to:\n\n page_pgoff(folio, page) != linear_page_index(vma, address)\n\n[ 13.336953] page: refcount:6 mapcount:1 mapping:00000000f43db19c index:0xffffaf150 pfn:0x4667c\n[ 13.337520] head: order:2 mapcount:1 entire_mapcount:0 nr_pages_mapped:1 pincount:0\n[ 13.337716] memcg:ffff00000405f000\n[ 13.337849] anon flags: 0x3fffc0000020459(locked|uptodate|dirty|owner_priv_1|head|swapbacked|node=0|zone=0|lastcpupid=0xffff)\n[ 13.338630] raw: 03fffc0000020459 ffff80008507b538 ffff80008507b538 ffff000006260361\n[ 13.338831] raw: 0000000ffffaf150 0000000000004000 0000000600000000 ffff00000405f000\n[ 13.339031] head: 03fffc0000020459 ffff80008507b538 ffff80008507b538 ffff000006260361\n[ 13.339204] head: 0000000ffffaf150 0000000000004000 0000000600000000 ffff00000405f000\n[ 13.339375] head: 03fffc0000000202 fffffdffc0199f01 ffffffff00000000 0000000000000001\n[ 13.339546] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000\n[ 13.339736] page dumped because: VM_BUG_ON_PAGE(page_pgoff(folio, page) != linear_page_index(vma, address))\n[ 13.340190] ------------[ cut here ]------------\n[ 13.340316] kernel BUG at mm/rmap.c:1380!\n[ 13.340683] Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP\n[ 13.340969] Modules linked in:\n[ 13.341257] CPU: 1 UID: 0 PID: 107 Comm: a.out Not tainted 6.14.0-rc3-gcf42737e247a-dirty #299\n[ 13.341470] Hardware name: linux,dummy-virt (DT)\n[ 13.341671] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ 13.341815] pc : __page_check_anon_rmap+0xa0/0xb0\n[ 13.341920] lr : __page_check_anon_rmap+0xa0/0xb0\n[ 13.342018] sp : ffff80008752bb20\n[ 13.342093] x29: ffff80008752bb20 x28: fffffdffc0199f00 x27: 0000000000000001\n[ 13.342404] x26: 0000000000000000 x25: 0000000000000001 x24: 0000000000000001\n[ 13.342575] x23: 0000ffffaf0d0000 x22: 0000ffffaf0d0000 x21: fffffdffc0199f00\n[ 13.342731] x20: fffffdffc0199f00 x19: ffff000006210700 x18: 00000000ffffffff\n[ 13.342881] x17: 6c203d2120296567 x16: 6170202c6f696c6f x15: 662866666f67705f\n[ 13.343033] x14: 6567617028454741 x13: 2929737365726464 x12: ffff800083728ab0\n[ 13.343183] x11: ffff800082996bf8 x10: 0000000000000fd7 x9 : ffff80008011bc40\n[ 13.343351] x8 : 0000000000017fe8 x7 : 00000000fffff000 x6 : ffff8000829eebf8\n[ 13.343498] x5 : c0000000fffff000 x4 : 0000000000000000 x3 : 0000000000000000\n[ 13.343645] x2 : 0000000000000000 x1 : ffff0000062db980 x0 : 000000000000005f\n[ 13.343876] Call trace:\n[ 13.344045] __page_check_anon_rmap+0xa0/0xb0 (P)\n[ 13.344234] folio_add_anon_rmap_ptes+0x22c/0x320\n[ 13.344333] do_swap_page+0x1060/0x1400\n[ 13.344417] __handl\n---truncated---"
}
],
"providerMetadata": {
"dateUpdated": "2025-05-04T07:26:41.097Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/4e9507246298fd6f1ca7bb42ef01a6e34fb93684"
},
{
"url": "https://git.kernel.org/stable/c/b1e11bd86c0943bb7624efebdc384340a50ad683"
},
{
"url": "https://git.kernel.org/stable/c/c50f8e6053b0503375c2975bf47f182445aebb4c"
}
],
"title": "mm: fix kernel BUG when userfaultfd_move encounters swapcache",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-21984",
"datePublished": "2025-04-01T15:47:11.523Z",
"dateReserved": "2024-12-29T08:45:45.799Z",
"dateUpdated": "2025-10-01T17:14:24.524Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:26:41.097Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm: fix kernel BUG when userfaultfd_move encounters swapcache\\n\\nuserfaultfd_move() checks whether the PTE entry is present or a\\nswap entry.\\n\\n- If the PTE entry is present, move_present_pte() handles folio\\n migration by setting:\\n\\n src_folio-\u003eindex = linear_page_index(dst_vma, dst_addr);\\n\\n- If the PTE entry is a swap entry, move_swap_pte() simply copies\\n the PTE to the new dst_addr.\\n\\nThis approach is incorrect because, even if the PTE is a swap entry,\\nit can still reference a folio that remains in the swap cache.\\n\\nThis creates a race window between steps 2 and 4.\\n 1. add_to_swap: The folio is added to the swapcache.\\n 2. try_to_unmap: PTEs are converted to swap entries.\\n 3. pageout: The folio is written back.\\n 4. Swapcache is cleared.\\nIf userfaultfd_move() occurs in the window between steps 2 and 4,\\nafter the swap PTE has been moved to the destination, accessing the\\ndestination triggers do_swap_page(), which may locate the folio in\\nthe swapcache. However, since the folio\u0027s index has not been updated\\nto match the destination VMA, do_swap_page() will detect a mismatch.\\n\\nThis can result in two critical issues depending on the system\\nconfiguration.\\n\\nIf KSM is disabled, both small and large folios can trigger a BUG\\nduring the add_rmap operation due to:\\n\\n page_pgoff(folio, page) != linear_page_index(vma, address)\\n\\n[ 13.336953] page: refcount:6 mapcount:1 mapping:00000000f43db19c index:0xffffaf150 pfn:0x4667c\\n[ 13.337520] head: order:2 mapcount:1 entire_mapcount:0 nr_pages_mapped:1 pincount:0\\n[ 13.337716] memcg:ffff00000405f000\\n[ 13.337849] anon flags: 0x3fffc0000020459(locked|uptodate|dirty|owner_priv_1|head|swapbacked|node=0|zone=0|lastcpupid=0xffff)\\n[ 13.338630] raw: 03fffc0000020459 ffff80008507b538 ffff80008507b538 ffff000006260361\\n[ 13.338831] raw: 0000000ffffaf150 0000000000004000 0000000600000000 ffff00000405f000\\n[ 13.339031] head: 03fffc0000020459 ffff80008507b538 ffff80008507b538 ffff000006260361\\n[ 13.339204] head: 0000000ffffaf150 0000000000004000 0000000600000000 ffff00000405f000\\n[ 13.339375] head: 03fffc0000000202 fffffdffc0199f01 ffffffff00000000 0000000000000001\\n[ 13.339546] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000\\n[ 13.339736] page dumped because: VM_BUG_ON_PAGE(page_pgoff(folio, page) != linear_page_index(vma, address))\\n[ 13.340190] ------------[ cut here ]------------\\n[ 13.340316] kernel BUG at mm/rmap.c:1380!\\n[ 13.340683] Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP\\n[ 13.340969] Modules linked in:\\n[ 13.341257] CPU: 1 UID: 0 PID: 107 Comm: a.out Not tainted 6.14.0-rc3-gcf42737e247a-dirty #299\\n[ 13.341470] Hardware name: linux,dummy-virt (DT)\\n[ 13.341671] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n[ 13.341815] pc : __page_check_anon_rmap+0xa0/0xb0\\n[ 13.341920] lr : __page_check_anon_rmap+0xa0/0xb0\\n[ 13.342018] sp : ffff80008752bb20\\n[ 13.342093] x29: ffff80008752bb20 x28: fffffdffc0199f00 x27: 0000000000000001\\n[ 13.342404] x26: 0000000000000000 x25: 0000000000000001 x24: 0000000000000001\\n[ 13.342575] x23: 0000ffffaf0d0000 x22: 0000ffffaf0d0000 x21: fffffdffc0199f00\\n[ 13.342731] x20: fffffdffc0199f00 x19: ffff000006210700 x18: 00000000ffffffff\\n[ 13.342881] x17: 6c203d2120296567 x16: 6170202c6f696c6f x15: 662866666f67705f\\n[ 13.343033] x14: 6567617028454741 x13: 2929737365726464 x12: ffff800083728ab0\\n[ 13.343183] x11: ffff800082996bf8 x10: 0000000000000fd7 x9 : ffff80008011bc40\\n[ 13.343351] x8 : 0000000000017fe8 x7 : 00000000fffff000 x6 : ffff8000829eebf8\\n[ 13.343498] x5 : c0000000fffff000 x4 : 0000000000000000 x3 : 0000000000000000\\n[ 13.343645] x2 : 0000000000000000 x1 : ffff0000062db980 x0 : 000000000000005f\\n[ 13.343876] Call trace:\\n[ 13.344045] __page_check_anon_rmap+0xa0/0xb0 (P)\\n[ 13.344234] folio_add_anon_rmap_ptes+0x22c/0x320\\n[ 13.344333] do_swap_page+0x1060/0x1400\\n[ 13.344417] __handl\\n---truncated---\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"mm/userfaultfd.c\"], \"versions\": [{\"version\": \"adef440691bab824e39c1b17382322d195e1fab0\", \"lessThan\": \"4e9507246298fd6f1ca7bb42ef01a6e34fb93684\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"adef440691bab824e39c1b17382322d195e1fab0\", \"lessThan\": \"b1e11bd86c0943bb7624efebdc384340a50ad683\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"adef440691bab824e39c1b17382322d195e1fab0\", \"lessThan\": \"c50f8e6053b0503375c2975bf47f182445aebb4c\", \"status\": \"affected\", \"versionType\": \"git\"}]}, {\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"affected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"mm/userfaultfd.c\"], \"versions\": [{\"version\": \"6.8\", \"status\": \"affected\"}, {\"version\": \"0\", \"lessThan\": \"6.8\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.12.20\", \"lessThanOrEqual\": \"6.12.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.13.8\", \"lessThanOrEqual\": \"6.13.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.14\", \"lessThanOrEqual\": \"*\", \"status\": \"unaffected\", \"versionType\": \"original_commit_for_fix\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.8\", \"versionEndExcluding\": \"6.12.20\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.8\", \"versionEndExcluding\": \"6.13.8\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.8\", \"versionEndExcluding\": \"6.14\"}]}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4e9507246298fd6f1ca7bb42ef01a6e34fb93684\"}, {\"url\": \"https://git.kernel.org/stable/c/b1e11bd86c0943bb7624efebdc384340a50ad683\"}, {\"url\": \"https://git.kernel.org/stable/c/c50f8e6053b0503375c2975bf47f182445aebb4c\"}], \"title\": \"mm: fix kernel BUG when userfaultfd_move encounters swapcache\", \"x_generator\": {\"engine\": \"bippy-1.2.0\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.7, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-21984\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T17:14:21.959942Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-362\", \"description\": \"CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T14:38:56.065Z\"}}]}",
"cveMetadata": "{\"cveId\": \"CVE-2025-21984\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2024-12-29T08:45:45.799Z\", \"datePublished\": \"2025-04-01T15:47:11.523Z\", \"dateUpdated\": \"2025-10-01T17:14:24.524Z\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…