CVE-2025-37960
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: memblock: Accept allocated memory before use in memblock_double_array() When increasing the array size in memblock_double_array() and the slab is not yet available, a call to memblock_find_in_range() is used to reserve/allocate memory. However, the range returned may not have been accepted, which can result in a crash when booting an SNP guest: RIP: 0010:memcpy_orig+0x68/0x130 Code: ... RSP: 0000:ffffffff9cc03ce8 EFLAGS: 00010006 RAX: ff11001ff83e5000 RBX: 0000000000000000 RCX: fffffffffffff000 RDX: 0000000000000bc0 RSI: ffffffff9dba8860 RDI: ff11001ff83e5c00 RBP: 0000000000002000 R08: 0000000000000000 R09: 0000000000002000 R10: 000000207fffe000 R11: 0000040000000000 R12: ffffffff9d06ef78 R13: ff11001ff83e5000 R14: ffffffff9dba7c60 R15: 0000000000000c00 memblock_double_array+0xff/0x310 memblock_add_range+0x1fb/0x2f0 memblock_reserve+0x4f/0xa0 memblock_alloc_range_nid+0xac/0x130 memblock_alloc_internal+0x53/0xc0 memblock_alloc_try_nid+0x3d/0xa0 swiotlb_init_remap+0x149/0x2f0 mem_init+0xb/0xb0 mm_core_init+0x8f/0x350 start_kernel+0x17e/0x5d0 x86_64_start_reservations+0x14/0x30 x86_64_start_kernel+0x92/0xa0 secondary_startup_64_no_verify+0x194/0x19b Mitigate this by calling accept_memory() on the memory range returned before the slab is available. Prior to v6.12, the accept_memory() interface used a 'start' and 'end' parameter instead of 'start' and 'size', therefore the accept_memory() call must be adjusted to specify 'start + size' for 'end' when applying to kernels prior to v6.12.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-05-20 16:15:34.267000
Last modified
2026-11-05 21:17:59.593000
View original CVE JSON
{
"id": "CVE-2025-37960",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-05-20T16:15:34.267",
"lastModified": "2026-11-05T21:17:59.593",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmemblock: Accept allocated memory before use in memblock_double_array()\n\nWhen increasing the array size in memblock_double_array() and the slab\nis not yet available, a call to memblock_find_in_range() is used to\nreserve/allocate memory. However, the range returned may not have been\naccepted, which can result in a crash when booting an SNP guest:\n\n RIP: 0010:memcpy_orig+0x68/0x130\n Code: ...\n RSP: 0000:ffffffff9cc03ce8 EFLAGS: 00010006\n RAX: ff11001ff83e5000 RBX: 0000000000000000 RCX: fffffffffffff000\n RDX: 0000000000000bc0 RSI: ffffffff9dba8860 RDI: ff11001ff83e5c00\n RBP: 0000000000002000 R08: 0000000000000000 R09: 0000000000002000\n R10: 000000207fffe000 R11: 0000040000000000 R12: ffffffff9d06ef78\n R13: ff11001ff83e5000 R14: ffffffff9dba7c60 R15: 0000000000000c00\n memblock_double_array+0xff/0x310\n memblock_add_range+0x1fb/0x2f0\n memblock_reserve+0x4f/0xa0\n memblock_alloc_range_nid+0xac/0x130\n memblock_alloc_internal+0x53/0xc0\n memblock_alloc_try_nid+0x3d/0xa0\n swiotlb_init_remap+0x149/0x2f0\n mem_init+0xb/0xb0\n mm_core_init+0x8f/0x350\n start_kernel+0x17e/0x5d0\n x86_64_start_reservations+0x14/0x30\n x86_64_start_kernel+0x92/0xa0\n secondary_startup_64_no_verify+0x194/0x19b\n\nMitigate this by calling accept_memory() on the memory range returned\nbefore the slab is available.\n\nPrior to v6.12, the accept_memory() interface used a 'start' and 'end'\nparameter instead of 'start' and 'size', therefore the accept_memory()\ncall must be adjusted to specify 'start + size' for 'end' when applying\nto kernels prior to v6.12."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: memblock: aceptar memoria asignada antes de su uso en memblock_double_array(). Al aumentar el tamaño de la matriz en memblock_double_array() y la losa aún no está disponible, se utiliza una llamada a memblock_find_in_range() para reservar/asignar memoria. Sin embargo, es posible que no se haya aceptado el rango devuelto, lo que puede provocar un bloqueo al iniciar un invitado SNP: RIP: 0010:memcpy_orig+0x68/0x130 Código: ... RSP: 0000:ffffffff9cc03ce8 EFLAGS: 00010006 RAX: ff11001ff83e5000 RBX: 0000000000000000 RCX: fffffffffffff000 RDX: 0000000000000bc0 RSI: ffffffff9dba8860 RDI: ff11001ff83e5c00 RBP: 0000000000002000 R08: 000000000000000 R09: 0000000000002000 R10: 000000207fffe000 R11: 0000040000000000 R12: ffffffff9d06ef78 R13: ff11001ff83e5000 R14: ffffffff9dba7c60 R15: 0000000000000c00 memblock_double_array+0xff/0x310 memblock_add_range+0x1fb/0x2f0 memblock_reserve+0x4f/0xa0 memblock_alloc_range_nid+0xac/0x130 memblock_alloc_internal+0x53/0xc0 memblock_alloc_try_nid+0x3d/0xa0 swiotlb_init_remap+0x149/0x2f0 mem_init+0xb/0xb0 mm_core_init+0x8f/0x350 start_kernel+0x17e/0x5d0 x86_64_start_reservations+0x14/0x30 x86_64_start_kernel+0x92/0xa0 secondary_startup_64_no_verify+0x194/0x19b Para mitigar este problema, llame a accept_memory() en el rango de memoria devuelto antes de que el slab esté disponible. Antes de la versión 6.12, la interfaz accept_memory() utilizaba los parámetros \"start\" y \"end\" en lugar de \"start\" y \"size\". Por lo tanto, la llamada a accept_memory() debe ajustarse para especificar \"start + size\" en lugar de \"end\" al aplicarlo a kernels anteriores a la versión 6.12."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"mm/memblock.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6",
"lessThan": "7bcd29181bab8d508d2adfdbb132de8b1e088698",
"versionType": "git",
"status": "affected"
},
{
"version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6",
"lessThan": "d66a22f6a432a9dd376c9b365d7dc89bd416909c",
"versionType": "git",
"status": "affected"
},
{
"version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6",
"lessThan": "aa513e69e011a2b19fa22ce62ce35effbd5e0c81",
"versionType": "git",
"status": "affected"
},
{
"version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6",
"lessThan": "da8bf5daa5e55a6af2b285ecda460d6454712ff4",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"mm/memblock.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "6.5",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.5",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.92",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.29",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.14.7",
"lessThanOrEqual": "6.14.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.15",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-05T20:45:54.898476Z",
"id": "CVE-2025-37960",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.5",
"versionEndExcluding": "6.6.92",
"matchCriteriaId": "D0DDEC71-DA9A-4DD8-9AE4-E164CFC5E573"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.7",
"versionEndExcluding": "6.12.29",
"matchCriteriaId": "7215ABCF-8EB1-46CD-8872-8BCE4890E579"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.13",
"versionEndExcluding": "6.14.7",
"matchCriteriaId": "5715A6F5-A34A-4B27-8A64-82825E963995"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*",
"matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*",
"matchCriteriaId": "4C9D071F-B28E-46EC-AC61-22B913390211"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*",
"matchCriteriaId": "13FC0DDE-E513-465E-9E81-515702D49B74"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*",
"matchCriteriaId": "8C7B5B0E-4EEB-48F5-B4CF-0935A7633845"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*",
"matchCriteriaId": "2D240580-3048-49B2-9E27-F115A9DF8224"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/7bcd29181bab8d508d2adfdbb132de8b1e088698",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/aa513e69e011a2b19fa22ce62ce35effbd5e0c81",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/d66a22f6a432a9dd376c9b365d7dc89bd416909c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/da8bf5daa5e55a6af2b285ecda460d6454712ff4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
}
]
}