CVE-2015-4170
Estado: ModificadaMedia (4.7)—
Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux kernel before 3.13-rc4-next-20131218 allows local users to cause a denial of service (ldsem_down_read and ldsem_down_write deadlock) by establishing a new tty thread during shutdown of a previous tty thread.
CVSS
- Versión: 3.0
- Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
- Puntuación base: 4.7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.33%
- Percentil entre todas las CVEs puntuadas: 23
- 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).
Tecnologías afectadas (6)
CWE
- CWE-362
Referencias
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf872776fc84128bb779ce2b83a37c884c3203ae
- http://www.openwall.com/lists/oss-security/2015/05/26/1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/74820
- https://access.redhat.com/errata/RHSA-2016:1395
- https://bugzilla.redhat.com/show_bug.cgi?id=1218879
- https://github.com/torvalds/linux/commit/cf872776fc84128bb779ce2b83a37c884c3203ae
- https://www.kernel.org/pub/linux/kernel/next/patch-v3.13-rc4-next-20131218.xz
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf872776fc84128bb779ce2b83a37c884c3203ae
- http://www.openwall.com/lists/oss-security/2015/05/26/1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/74820
- https://access.redhat.com/errata/RHSA-2016:1395
- https://bugzilla.redhat.com/show_bug.cgi?id=1218879
- https://github.com/torvalds/linux/commit/cf872776fc84128bb779ce2b83a37c884c3203ae
- https://www.kernel.org/pub/linux/kernel/next/patch-v3.13-rc4-next-20131218.xz
JSON original (NVD)
Mostrar
{
"id": "CVE-2015-4170",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 4.7,
"accessVector": "LOCAL",
"vectorString": "AV:L/AC:M/Au:N/C:N/I:N/A:C",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 6.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 3.4,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 4.7,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "REQUIRED",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2016-05-02T10:59:12.623",
"references": [
{
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf872776fc84128bb779ce2b83a37c884c3203ae",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "http://www.openwall.com/lists/oss-security/2015/05/26/1",
"source": "cve@mitre.org"
},
{
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html",
"source": "cve@mitre.org"
},
{
"url": "http://www.securityfocus.com/bid/74820",
"source": "cve@mitre.org"
},
{
"url": "https://access.redhat.com/errata/RHSA-2016:1395",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1218879",
"tags": [
"Issue Tracking",
"VDB Entry"
],
"source": "cve@mitre.org"
},
{
"url": "https://github.com/torvalds/linux/commit/cf872776fc84128bb779ce2b83a37c884c3203ae",
"source": "cve@mitre.org"
},
{
"url": "https://www.kernel.org/pub/linux/kernel/next/patch-v3.13-rc4-next-20131218.xz",
"tags": [
"Patch"
],
"source": "cve@mitre.org"
},
{
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf872776fc84128bb779ce2b83a37c884c3203ae",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.openwall.com/lists/oss-security/2015/05/26/1",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.securityfocus.com/bid/74820",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2016:1395",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1218879",
"tags": [
"Issue Tracking",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://github.com/torvalds/linux/commit/cf872776fc84128bb779ce2b83a37c884c3203ae",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.kernel.org/pub/linux/kernel/next/patch-v3.13-rc4-next-20131218.xz",
"tags": [
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-362"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux kernel before 3.13-rc4-next-20131218 allows local users to cause a denial of service (ldsem_down_read and ldsem_down_write deadlock) by establishing a new tty thread during shutdown of a previous tty thread."
},
{
"lang": "es",
"value": "Condición de carrera en la función ldsem_cmpxchg en drivers/tty/tty_ldsem.c en el kernel de Linux en versiones anteriores a 3.13-rc4-next-20131218 permite a usuarios locales provocar una denegación de servicio (interbloqueo de ldsem_down_read y ldsem_down_write) estableciendo un nuevo hilo tty durante la desconexión de un hilo tty previo."
}
],
"lastModified": "2026-06-17T00:26:51.493",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7E7A459C-0A2D-4CD2-9FCD-4592B31F774C",
"versionEndIncluding": "3.13.3"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9835B192-FE11-4FB6-B1D8-C47530A46014"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:7.1_s390x:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B4860C7C-372F-4AE1-A893-2EB952042638"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.1_ppc64:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5B6ED0AA-CD87-47A5-8E82-C9C7BD14F1AE"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:7.1_ppc64le:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "97DB8096-0177-4F72-A324-196EB5DF6C66"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0E8CD4EF-DC90-40BB-A721-6EC087507906"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}