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{"id": "SUSE_SU-2017-2099-1.NASL", "vendorId": null, "type": "nessus", "bulletinFamily": "scanner", "title": "SUSE SLES12 Security Update : kernel (SUSE-SU-2017:2099-1)", "description": "This update for the Linux Kernel 3.12.60-52_57 fixes several issues.\nThe following security bugs were fixed :\n\n - CVE-2017-7533: A bug in inotify code allowed local users to escalate privilege (bsc#1050751).\n\n - CVE-2017-7645: The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel allowed remote attackers to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c, fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c (bsc#1046191).\n\n - CVE-2017-2636: Race condition in drivers/tty/n_hdlc.c in the Linux kernel allowed local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline (bsc#1027575).\n\n - CVE-2017-9242: The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux kernel is too late in checking whether an overwrite of an skb data structure may occur, which allowed local users to cause a denial of service (system crash) via crafted system calls (bsc#1042892).\n\nNote that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.", "published": "2017-08-09T00:00:00", "modified": "2021-01-06T00:00:00", "epss": [], "cvss": {"score": 0.0, "vector": "NONE"}, "cvss2": {}, "cvss3": {}, "href": "https://www.tenable.com/plugins/nessus/102317", "reporter": "This script is Copyright (C) 2017-2021 and is owned by Tenable, Inc. or an Affiliate thereof.", "references": ["http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7533", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7645", "https://bugzilla.suse.com/show_bug.cgi?id=1050751", "https://www.suse.com/security/cve/CVE-2017-7645/", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9242", "https://bugzilla.suse.com/show_bug.cgi?id=1046191", "https://bugzilla.suse.com/show_bug.cgi?id=1042892", "https://www.suse.com/security/cve/CVE-2017-2636/", "https://www.suse.com/security/cve/CVE-2017-7533/", "https://www.suse.com/security/cve/CVE-2017-9242/", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2636", "http://www.nessus.org/u?0a4ce712", "https://bugzilla.suse.com/show_bug.cgi?id=1027575"], "cvelist": ["CVE-2017-2636", "CVE-2017-7533", "CVE-2017-7645", "CVE-2017-9242"], "immutableFields": [], "lastseen": "2023-05-18T14:16:47", "viewCount": 15, "enchantments": {"dependencies": {"references": [{"type": "amazon", "idList": ["ALAS-2017-846", "ALAS-2017-870"]}, {"type": "archlinux", "idList": ["ASA-201703-13", "ASA-201703-6", "ASA-201703-7", "ASA-201703-8"]}, {"type": "avleonov", "idList": ["AVLEONOV:258C4C7C6D4C10965793FFCDA8860939"]}, {"type": "centos", "idList": ["CESA-2017:0892", "CESA-2017:0933", "CESA-2017:1615", "CESA-2017:1842", "CESA-2017:2473", "CESA-2018:1319"]}, {"type": "cloudfoundry", "idList": ["CFOUNDRY:18773E2EBFCA95CBB12CDED52A4EFFCC", "CFOUNDRY:357A3D675E310E16A6C343FB03145CD4", "CFOUNDRY:4DDC563CC4B682CD1D8A3F51374BC77A", 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A Common Vulnerability Scoring System (CVSS) base\nscore, which gives a detailed severity rating, is available for each\nvulnerability from the CVE link(s) in the References section.\n\nThe kernel packages contain the Linux kernel, the core of any Linux\noperating system.\n\nSecurity Fix(es) :\n\n* A race condition flaw was found in the N_HLDC Linux kernel driver\nwhen accessing n_hdlc.tbuf list that can lead to double free. A local,\nunprivileged user able to set the HDLC line discipline on the tty\ndevice could use this flaw to increase their privileges on the system.\n(CVE-2017-2636, Important)\n\n* A flaw was found in the Linux kernel's implementation of seq_file\nwhere a local attacker could manipulate memory in the put() function\npointer. This could lead to memory corruption and possible privileged\nescalation. (CVE-2016-7910, Moderate)\n\nRed Hat would like to thank Alexander Popov for reporting\nCVE-2017-2636.\n\nBug Fix(es) :\n\n* Previously, Chelsio firmware included an incorrectly-formatted\nfirmware bin file. As a consequence, the firmware could not be\nflashed. This update provides a firmware bin file that is formatted\ncorrectly. As a result, Chelsio firmware can now be flashed\nsuccessfully. (BZ#1433865)\n\n* When multiple simultaneous processes attempted to read from the\n/proc/stat file, spinlock overhead was generated on Non-Uniform Memory\nAccess (NUMA) systems. Consequently, a large amount of CPU was\nconsumed. With this update, the underlying source code has been fixed\nto avoid taking spinlock when the interrupt line does not exist. As a\nresult, the spinlock overhead is now generated less often, and\nmultiple simultaneous processes can now read /proc/stat without\nconsuming a large amount of CPU. 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