CVE-2023-54077
Estado: AplazadaAlta (7.8)—
In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Fix memory leak if ntfs_read_mft failed
Label ATTR_ROOT in ntfs_read_mft() sets is_root = true and ni->ni_flags |= NI_FLAG_DIR, then next attr will goto label ATTR_ALLOC and alloc ni->dir.alloc_run. However two states are not always consistent and can make memory leak.
1) attr_name in ATTR_ROOT does not fit the condition it will set is_root = true but NI_FLAG_DIR is not set. 2) next attr_name in ATTR_ALLOC fits the condition and alloc ni->dir.alloc_run 3) in cleanup function ni_clear(), when NI_FLAG_DIR is set, it frees ni->dir.alloc_run, otherwise it frees ni->file.run 4) because NI_FLAG_DIR is not set in this case, ni->dir.alloc_run is leaked as kmemleak reported:
Leer descripción completaMostrar menos
Fix this by always setting is_root and NI_FLAG_DIR together.
Detalles técnicos trazas, registros y código del informe original
unreferenced object 0xffff888003bc5480 (size 64):
backtrace:
[<000000003d42e6b0>] __kmalloc_node+0x4e/0x1c0
[<00000000d8e19b8a>] kvmalloc_node+0x39/0x1f0
[<00000000fc3eb5b8>] run_add_entry+0x18a/0xa40 [ntfs3]
[<0000000011c9f978>] run_unpack+0x75d/0x8e0 [ntfs3]
[<00000000e7cf1819>] run_unpack_ex+0xbc/0x500 [ntfs3]
[<00000000bbf0a43d>] ntfs_iget5+0xb25/0x2dd0 [ntfs3]
[<00000000a6e50693>] ntfs_fill_super+0x218d/0x3580 [ntfs3]
[<00000000b9170608>] get_tree_bdev+0x3fb/0x710
[<000000004833798a>] vfs_get_tree+0x8e/0x280
[<000000006e20b8e6>] path_mount+0xf3c/0x1930
[<000000007bf15a5f>] do_mount+0xf3/0x110
...CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.18%
- Percentil entre todas las CVEs puntuadas: 7
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1203Exploitation for Client Executionexecution45 % - Impacto principal
T1499.004Application or System Exploitationimpact35 %
AV:L con UI:R sugiere interacción del usuario (montar una imagen NTFS preparada), pero es fuga de memoria sin RCE demostrable; impacto es DoS por agotamiento de recursos.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/1bc6bb657dfb0ab3b94ef6d477ca241bf7b6ec06
- https://git.kernel.org/stable/c/3030f2b9b3329db3948c1a145a5493ca6f617d50
- https://git.kernel.org/stable/c/3bb0d3eb475f01744ce6d6e998dfbd80220852a1
- https://git.kernel.org/stable/c/93bf79f989688852deade1550fb478b0a4d8daa8
- https://git.kernel.org/stable/c/bfa434c60157c9793e9b12c9b68ade02aff9f803
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-54077",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "3030f2b9b3329db3948c1a145a5493ca6f617d50",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "1bc6bb657dfb0ab3b94ef6d477ca241bf7b6ec06",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "93bf79f989688852deade1550fb478b0a4d8daa8",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "3bb0d3eb475f01744ce6d6e998dfbd80220852a1",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "bfa434c60157c9793e9b12c9b68ade02aff9f803",
"versionType": "git"
}
],
"programFiles": [
"fs/ntfs3/inode.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.111",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.28",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.2.15",
"versionType": "semver",
"lessThanOrEqual": "6.2.*"
},
{
"status": "unaffected",
"version": "6.3.2",
"versionType": "semver",
"lessThanOrEqual": "6.3.*"
},
{
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/ntfs3/inode.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-12-24T13:16:09.543",
"references": [
{
"url": "https://git.kernel.org/stable/c/1bc6bb657dfb0ab3b94ef6d477ca241bf7b6ec06",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/3030f2b9b3329db3948c1a145a5493ca6f617d50",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/3bb0d3eb475f01744ce6d6e998dfbd80220852a1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/93bf79f989688852deade1550fb478b0a4d8daa8",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/bfa434c60157c9793e9b12c9b68ade02aff9f803",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix memory leak if ntfs_read_mft failed\n\nLabel ATTR_ROOT in ntfs_read_mft() sets is_root = true and\nni->ni_flags |= NI_FLAG_DIR, then next attr will goto label ATTR_ALLOC\nand alloc ni->dir.alloc_run. However two states are not always\nconsistent and can make memory leak.\n\n 1) attr_name in ATTR_ROOT does not fit the condition it will set\n is_root = true but NI_FLAG_DIR is not set.\n 2) next attr_name in ATTR_ALLOC fits the condition and alloc\n ni->dir.alloc_run\n 3) in cleanup function ni_clear(), when NI_FLAG_DIR is set, it frees\n ni->dir.alloc_run, otherwise it frees ni->file.run\n 4) because NI_FLAG_DIR is not set in this case, ni->dir.alloc_run is\n leaked as kmemleak reported:\n\nunreferenced object 0xffff888003bc5480 (size 64):\n backtrace:\n [<000000003d42e6b0>] __kmalloc_node+0x4e/0x1c0\n [<00000000d8e19b8a>] kvmalloc_node+0x39/0x1f0\n [<00000000fc3eb5b8>] run_add_entry+0x18a/0xa40 [ntfs3]\n [<0000000011c9f978>] run_unpack+0x75d/0x8e0 [ntfs3]\n [<00000000e7cf1819>] run_unpack_ex+0xbc/0x500 [ntfs3]\n [<00000000bbf0a43d>] ntfs_iget5+0xb25/0x2dd0 [ntfs3]\n [<00000000a6e50693>] ntfs_fill_super+0x218d/0x3580 [ntfs3]\n [<00000000b9170608>] get_tree_bdev+0x3fb/0x710\n [<000000004833798a>] vfs_get_tree+0x8e/0x280\n [<000000006e20b8e6>] path_mount+0xf3c/0x1930\n [<000000007bf15a5f>] do_mount+0xf3/0x110\n ...\n\nFix this by always setting is_root and NI_FLAG_DIR together."
}
],
"lastModified": "2026-08-04T10:19:27.853",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}