CVE-2015-2922

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IPv6 stack in the Linux kernel before 3.19.6 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message."}, {"lang": "es", "value": "La funci\u00f3n ndisc_router_discovery en net/ipv6/ndisc.c en la implementaci\u00f3n de protocolo Neighbor Discovery (ND) en la pila IPv6 en el kernel de Linux anterior a 3.19.6 permite a atacantes remotos reconfigurar una configuraci\u00f3n 'hop-limit' a trav\u00e9s de un valor hop_limit peque\u00f1o en un mensaje Router Advertisement (RA)."}], "id": "CVE-2015-2922", "lastModified": "2026-06-17T00:24:58.217", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 6.5, 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"http://www.securityfocus.com/bid/74315"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id/1032417"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1203712"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/torvalds/linux/commit/6fd99094de2b83d1d4c8457f2c83483b2828e75a"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-17"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2015:1221", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-504.30.3.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2015-07-14T00:00:00Z"}, {"advisory": "RHSA-2015:1565", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-229.11.1.rt56.141.11.el7_1", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-08-05T00:00:00Z"}, {"advisory": "RHSA-2015:1534", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-229.11.1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-08-06T00:00:00Z"}, {"advisory": "RHSA-2015:1564", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-229.rt56.158.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2015-08-05T00:00:00Z"}], "bugzilla": {"description": "kernel: denial of service (DoS) attack against IPv6 network stacks due to improper handling of Router Advertisements.", "id": "1203712", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1203712"}, "csaw": false, "cvss": {"cvss_base_score": "3.3", "cvss_scoring_vector": "AV:A/AC:L/Au:N/C:N/I:N/A:P", "status": "verified"}, "cwe": "CWE-454", "details": ["The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementation in the IPv6 stack in the Linux kernel before 3.19.6 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message.", "It was found that the Linux kernel's TCP/IP protocol suite implementation for IPv6 allowed the Hop Limit value to be set to a smaller value than the default one. An attacker on a local network could use this flaw to prevent systems on that network from sending or receiving network packets."], "name": "CVE-2015-2922", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2015-03-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-2922\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-2922"], "statement": "This issue affects the versions of the Linux kernel as shipped with\nRed Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2. Future kernel\nupdates for Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2 may\naddress this issue.\nRed Hat Enterprise Linux 5 is now in Production 3 phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.", "threat_severity": "Low"}

{}