CVE-2016-6828

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4C613BBC-9849-4519-86AE-ECB4BBC32BD7", "versionEndIncluding": "4.7.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option."}, {"lang": "es", "value": "La funci\u00f3n tcp_check_send_head en include/net/tcp.h en el kernel de Linux en versiones anteriores a 4.7.5 no mantiene adecuadamente cierto estado SACK tras una copia de datos fallida, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (uso despu\u00e9s de liberaci\u00f3n de memoria tcp_xmit_retransmit_queue y ca\u00edda de sistema ) a trav\u00e9s de una opci\u00f3n SACK manipulada."}], "id": "CVE-2016-6828", "lastModified": "2026-06-17T00:51:50.920", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 4.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-10-16T21:59:08.053", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4"}, {"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2017-0036.html"}, {"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2017-0086.html"}, {"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2017-0091.html"}, {"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2017-0113.html"}, {"source": "secalert@redhat.com", "tags": ["Release Notes", "Third Party Advisory"], "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/08/15/1"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/92452"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1367091"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch"], "url": "https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4"}, {"source": "secalert@redhat.com", "url": "https://marcograss.github.io/security/linux/2016/08/18/cve-2016-6828-linux-kernel-tcp-uaf.html"}, {"source": "secalert@redhat.com", "url": "https://source.android.com/security/bulletin/2016-11-01.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2017-0036.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2017-0086.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2017-0091.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2017-0113.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/08/15/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/92452"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1367091"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch"], "url": "https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://marcograss.github.io/security/linux/2016/08/18/cve-2016-6828-linux-kernel-tcp-uaf.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://source.android.com/security/bulletin/2016-11-01.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2017:0036", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-642.13.1.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2017-01-10T00:00:00Z"}, {"advisory": "RHSA-2017:0091", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-514.6.1.rt56.429.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-01-17T00:00:00Z"}, {"advisory": "RHSA-2017:0086", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-514.6.1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-01-17T00:00:00Z"}, {"advisory": "RHSA-2017:0113", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-514.rt56.210.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2017-01-17T00:00:00Z"}], "bugzilla": {"description": "kernel: Use after free in tcp_xmit_retransmit_queue", "id": "1367091", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1367091"}, "csaw": false, "cvss": {"cvss_base_score": "3.6", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:N/I:P/A:P", "status": "verified"}, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "status": "verified"}, "cwe": "CWE-416", "details": ["The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option.", "A use-after-free vulnerability was found in tcp_xmit_retransmit_queue and other tcp_* functions. This condition could allow an attacker to send an incorrect selective acknowledgment to existing connections, possibly resetting a connection."], "name": "CVE-2016-6828", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2016-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-6828\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-6828"], "threat_severity": "Moderate"}

{}