CVE-2025-37960

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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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/memblock.c"], "versions": [{"version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6", "lessThan": "7bcd29181bab8d508d2adfdbb132de8b1e088698", "status": "affected", "versionType": "git"}, {"version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6", "lessThan": "d66a22f6a432a9dd376c9b365d7dc89bd416909c", "status": "affected", "versionType": "git"}, {"version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6", "lessThan": "aa513e69e011a2b19fa22ce62ce35effbd5e0c81", "status": "affected", "versionType": "git"}, {"version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6", "lessThan": "da8bf5daa5e55a6af2b285ecda460d6454712ff4", "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/memblock.c"], "versions": [{"version": "6.5", "status": "affected"}, {"version": "0", "lessThan": "6.5", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.92", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.29", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.7", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15", "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": "6.5", "versionEndExcluding": "6.6.92"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.12.29"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.14.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7bcd29181bab8d508d2adfdbb132de8b1e088698"}, {"url": "https://git.kernel.org/stable/c/d66a22f6a432a9dd376c9b365d7dc89bd416909c"}, {"url": "https://git.kernel.org/stable/c/aa513e69e011a2b19fa22ce62ce35effbd5e0c81"}, {"url": "https://git.kernel.org/stable/c/da8bf5daa5e55a6af2b285ecda460d6454712ff4"}], "title": "memblock: Accept allocated memory before use in memblock_double_array()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-37960", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-05T20:45:54.898476Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-05T20:52:09.329Z"}}]}}

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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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.92", "versionStartIncluding": "6.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.29", "versionStartIncluding": "6.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.14.7", "versionStartIncluding": "6.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.15", "versionStartIncluding": "6.5"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:18:25.936Z"}}}, "cveMetadata": {"cveId": "CVE-2025-37960", "state": "PUBLISHED", "dateUpdated": "2026-11-05T20:52:09.329Z", "dateReserved": "2025-04-16T04:51:23.974Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-05-20T16:01:53.264Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["mm/memblock.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7bcd29181bab8d508d2adfdbb132de8b1e088698", "status": "affected", "version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6", "versionType": "git"}, {"lessThan": "d66a22f6a432a9dd376c9b365d7dc89bd416909c", "status": "affected", "version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6", "versionType": "git"}, {"lessThan": "aa513e69e011a2b19fa22ce62ce35effbd5e0c81", "status": "affected", "version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6", "versionType": "git"}, {"lessThan": "da8bf5daa5e55a6af2b285ecda460d6454712ff4", "status": "affected", "version": "dcdfdd40fa82b6704d2841938e5c8ec3051eb0d6", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["mm/memblock.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.5"}, {"lessThan": "6.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.92", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.29", "versionType": "semver"}, {"lessThanOrEqual": "6.14.*", "status": "unaffected", "version": "6.14.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.15", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D0DDEC71-DA9A-4DD8-9AE4-E164CFC5E573", "versionEndExcluding": "6.6.92", "versionStartIncluding": "6.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7215ABCF-8EB1-46CD-8872-8BCE4890E579", "versionEndExcluding": "6.12.29", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5715A6F5-A34A-4B27-8A64-82825E963995", "versionEndExcluding": "6.14.7", "versionStartIncluding": "6.13", "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", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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 tama\u00f1o de la matriz en memblock_double_array() y la losa a\u00fan no est\u00e1 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 C\u00f3digo: ... 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 est\u00e9 disponible. Antes de la versi\u00f3n 6.12, la interfaz accept_memory() utilizaba los par\u00e1metros \"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 versi\u00f3n 6.12."}], "id": "CVE-2025-37960", "lastModified": "2026-11-05T21:17:59.593", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-37960", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:45:54.898476Z", "version": "2.0.3"}}]}, "published": "2025-05-20T16:15:34.267", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: memblock: Accept allocated memory before use in memblock_double_array()", "id": "2367588", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2367588"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmemblock: Accept allocated memory before use in memblock_double_array()\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:\nRIP: 0010:memcpy_orig+0x68/0x130\nCode: ...\nRSP: 0000:ffffffff9cc03ce8 EFLAGS: 00010006\nRAX: ff11001ff83e5000 RBX: 0000000000000000 RCX: fffffffffffff000\nRDX: 0000000000000bc0 RSI: ffffffff9dba8860 RDI: ff11001ff83e5c00\nRBP: 0000000000002000 R08: 0000000000000000 R09: 0000000000002000\nR10: 000000207fffe000 R11: 0000040000000000 R12: ffffffff9d06ef78\nR13: ff11001ff83e5000 R14: ffffffff9dba7c60 R15: 0000000000000c00\nmemblock_double_array+0xff/0x310\nmemblock_add_range+0x1fb/0x2f0\nmemblock_reserve+0x4f/0xa0\nmemblock_alloc_range_nid+0xac/0x130\nmemblock_alloc_internal+0x53/0xc0\nmemblock_alloc_try_nid+0x3d/0xa0\nswiotlb_init_remap+0x149/0x2f0\nmem_init+0xb/0xb0\nmm_core_init+0x8f/0x350\nstart_kernel+0x17e/0x5d0\nx86_64_start_reservations+0x14/0x30\nx86_64_start_kernel+0x92/0xa0\nsecondary_startup_64_no_verify+0x194/0x19b\nMitigate this by calling accept_memory() on the memory range returned\nbefore the slab is available.\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."], "name": "CVE-2025-37960", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-37960\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-37960\nhttps://lore.kernel.org/linux-cve-announce/2025052004-CVE-2025-37960-97de@gregkh/T"], "statement": "Affects early boot in AMD SEV-SNP guests only. No impact on runtime security, no remote or local exploitability; leads to boot failure only in rare configurations.", "threat_severity": "Moderate"}

{"created": "2025-06-24T09:44:23.547201+00:00", "updated": "2025-06-24T09:44:23.547249+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}