CVE-2017-15649

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Esto se debe a una condici\u00f3n de carrera (que afecta a fanout_add y packet_do_bind) que da lugar a un uso de memoria previamente liberada. Esta vulnerabilidad es diferente de CVE-2017-6346."}], "id": "CVE-2017-15649", "lastModified": "2026-06-17T01:08:03.240", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-10-19T22:29:00.433", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=008ba2a13f2d04c947adc536d19debb8fe66f110"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4971613c1639d8e5f102c4e797c3bf8f83a5a69e"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "http://patchwork.ozlabs.org/patch/813945/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "http://patchwork.ozlabs.org/patch/818726/"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": 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{"affected_release": [{"advisory": "RHSA-2018:0152", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-693.17.1.rt56.636.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-01-25T00:00:00Z"}, {"advisory": "RHSA-2018:0151", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-693.17.1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-01-25T00:00:00Z"}, {"advisory": "RHSA-2018:0181", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-693.17.1.rt56.604.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2018-01-25T00:00:00Z"}], "bugzilla": {"description": "kernel: Use-after-free in the af_packet.c", "id": "1504574", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1504574"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures, because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free, a different vulnerability than CVE-2017-6346.", "It was found that fanout_add() in 'net/packet/af_packet.c' in the Linux kernel, before version 4.13.6, allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures, because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free bug."], "name": "CVE-2017-15649", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"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": "Affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2017-09-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-15649\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-15649"], "statement": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6 as a code with the flaw is not present in the products listed.\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future updates for the respective releases may address this issue.", "threat_severity": "Important"}

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