fkie_cve-2018-12232
Vulnerability from fkie_nvd
Published
2018-06-12 12:29
Modified
2024-11-21 03:44
Severity ?
Summary
In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
linux | linux_kernel | * |
{ "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5CF7338D-D530-4EEA-B1D6-926A91AC72BE", "versionEndIncluding": "4.17.1", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "descriptions": [ { "lang": "en", "value": "In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat\u0027s execution, leading to a NULL pointer dereference and system crash." }, { "lang": "es", "value": "En net/socket.c en el kernel de Linux hasta la versi\u00f3n 4.17.1, hay una condici\u00f3n de carrera entre fchownat y close en los casos en los que apuntan al mismo descriptor de archivo socket. Esto est\u00e1 relacionado con las funciones sock_close y sockfs_setattr. fchownat no incrementa el conteo de referencia del descriptor de archivos, lo que permite que close establezca el socket como NULL durante la ejecuci\u00f3n de fchownat lo que conduce a una desreferencia de puntero NULL y a un cierre inesperado del sistema." } ], "id": "CVE-2018-12232", "lastModified": "2024-11-21T03:44:49.673", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C", "version": "2.0" }, "exploitabilityScore": 8.6, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV30": [ { "cvssData": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0" }, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2018-06-12T12:29:00.210", "references": [ { "source": "cve@mitre.org", "tags": [ "Patch", "Third Party Advisory" ], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d8c50dcb029872b298eea68cc6209c866fd3e14" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/104453" }, { "source": "cve@mitre.org", "url": "https://access.redhat.com/errata/RHSA-2018:2948" }, { "source": "cve@mitre.org", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "https://lkml.org/lkml/2018/6/5/14" }, { "source": "cve@mitre.org", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://patchwork.ozlabs.org/patch/926519/" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/3752-1/" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/3752-2/" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/3752-3/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch", "Third Party Advisory" ], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d8c50dcb029872b298eea68cc6209c866fd3e14" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/104453" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHSA-2018:2948" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://lkml.org/lkml/2018/6/5/14" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://patchwork.ozlabs.org/patch/926519/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/3752-1/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/3752-2/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/3752-3/" } ], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-362" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.