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{"acknowledgement": "Red Hat would like to thank Qualys Inc for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:1524", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-754.29.1.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-04-22T00:00:00Z"}], "bugzilla": {"description": "kernel: offset2lib allows for the stack guard page to be jumped over", "id": "1462158", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1462158"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.9", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "verified"}, "cwe": "CWE-20", "details": ["The offset2lib patch as used by the Linux Kernel contains a vulnerability, if RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated (the maximum under the 1/4 restriction) then the stack will be grown down to 0x80000000, and as the PIE binary is mapped above 0x80000000 the minimum distance between the end of the PIE binary's read-write segment and the start of the stack becomes small enough that the stack guard page can be jumped over by an attacker. This affects Linux Kernel version 4.11.5. This is a different issue than CVE-2017-1000370 and CVE-2017-1000365. This issue appears to be limited to i386 based systems.", "A flaw was found in the Linux kernel's implementation of mapping ELF PIE binary loading to allow evasion of the stack-guard page protection mechanisms that intend to mitigate this behavior. This issue appears to be limited to i386 based systems."], "name": "CVE-2017-1000371", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2017-06-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-1000371\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-1000371\nhttps://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt"], "statement": "This issue does not affect the Linux kernel packages as shipped with Red Hat\nEnterprise Linux 7, MRG-2 and realtime kernels.\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6.\nFuture Linux kernel updates for the respective releases may address this issue.", "threat_severity": "Low"}