An information disclosure vulnerability exists when certain central processing units (CPU) speculatively access memory, aka 'Windows Kernel Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-1071, CVE-2019-1073.
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This CVE ID is unique from CVE-2019-1071, CVE-2019-1073. (CVE-2019-1125also known as Spectre SWAPGS gadget vulnerability)\n\nA Spectre gadget was found in the Linux kernel's implementation of system interrupts. An attacker with unprivilegedlocal access could use this information to reveal private data through a Spectre-like side channel.\n\nImpact\n\nF5 continues to investigate the impact of the Spectre SWAPGS gadget vulnerability on our products. F5 is focused onproviding patched releases as soon as we have fully tested and verified fixes. F5 will update this article with the most current information as soon as it is confirmed.\n\nBIG-IP\n\nFirst and foremost, there is no exposure on BIG-IP products by way ofthe data plane. 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Please contact your cloud provider or hypervisor vendor to ensure that their platforms or products are protected against this Spectre vulnerability.\n\nFor vCMP environments, F5 believes that while the Spectre SWAPGS gadget vulnerability does offer a theoretical possibility of guest-to-guest or guest-to-host attacks, these would be very difficult to successfully conduct in the BIG-IP environment.\n\nF5 is working with our hardware component vendors to determine the scope of this vulnerability across our various generations of hardware platforms. All of the information we currently have from our vendors is represented in this Security Advisory.\n\nWe are also testing the fixes produced by the Linux community. We are conducting anextensive test campaign to characterize the impact of the fixes on system performance and stabilityto ensure, as best we can, a good experience for our customers. 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(CVE-2018-17972)\n\n - Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.\n (CVE-2019-11477)\n\n - A double-free can happen in idr_remove_all() in lib/idr.c in the Linux kernel 2.6 branch. An unprivileged local attacker can use this flaw for a privilege escalation or for a system crash and a denial of service (DoS). (CVE-2019-3896)\n\n - An information disclosure vulnerability exists when certain central processing units (CPU) speculatively access memory, aka 'Windows Kernel Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-1071, CVE-2019-1073. 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CVE-2019-1125
