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CVE-2019-11478

Status Candidate

Overview

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. 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 f070ef2ac66716357066b683fb0baf55f8191a2e.

Related Files

Kernel Live Patch Security Notice LSN-0058-1
Posted Oct 23, 2019
Authored by Benjamin M. Romer

It was discovered that a race condition existed in the GFS2 file system in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). It was discovered that a use-after-free error existed in the block layer subsystem of the Linux kernel when certain failure conditions occurred. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux
advisories | CVE-2016-10905, CVE-2018-20856, CVE-2018-20961, CVE-2018-20976, CVE-2018-21008, CVE-2019-0136, CVE-2019-10126, CVE-2019-10207, CVE-2019-11477, CVE-2019-11478, CVE-2019-11833, CVE-2019-12614, CVE-2019-14283, CVE-2019-14284, CVE-2019-14814, CVE-2019-14815, CVE-2019-14816, CVE-2019-14821, CVE-2019-14835, CVE-2019-2054, CVE-2019-2181, CVE-2019-3846
SHA-256 | 5442de6a129171e9103a7acd9d861ab0fda6074505e32a4ad08db9df45b30c61
Kernel Live Patch Security Notice LSN-0055-1
Posted Sep 7, 2019
Authored by Benjamin M. Romer

It was discovered that a use-after-free error existed in the block layer subsystem of the Linux kernel when certain failure conditions occurred. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. It was discovered that the Bluetooth UART implementation in the Linux kernel did not properly check for missing tty operations. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux
advisories | CVE-2018-20856, CVE-2019-10207, CVE-2019-11478, CVE-2019-13233, CVE-2019-14283, CVE-2019-14284
SHA-256 | 8660e81d1dad1d0ff9a78d762c78b37cd4c52f125cddd39f7636189484d3352f
Red Hat Security Advisory 2019-1699-01
Posted Jul 8, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1699-01 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2019-10161, CVE-2019-10166, CVE-2019-10167, CVE-2019-10168, CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | d22eb754fb8254f68a8d336dc7f00edae903b9adbc16438840fac6e3bedc813f
Red Hat Security Advisory 2019-1602-01
Posted Jun 25, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1602-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | 44681c017f6cb6453545b8a6d66047878734200ddb425c65cba895080004b65a
Red Hat Security Advisory 2019-1594-01
Posted Jun 25, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1594-01 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | 42cc94d32edd63d60d4201b04d197d324050b9d1d3c45b0f2c6a12cc47a4bf7f
Kernel Live Patch Security Notice LSN-0052-1
Posted Jun 19, 2019
Authored by Benjamin M. Romer

Jonathan Looney discovered that an integer overflow existed in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service (system crash). Jonathan Looney discovered that the TCP retransmission queue implementation in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service.

tags | advisory, remote, denial of service, overflow, kernel, tcp
systems | linux
advisories | CVE-2019-11477, CVE-2019-11478
SHA-256 | 180fed7fbe08b89246da448a793e20ef76b9d263407b8a46ed5a13a5f4acca3b
Debian Security Advisory 4465-1
Posted Jun 19, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4465-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2019-10126, CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-11486, CVE-2019-11599, CVE-2019-11815, CVE-2019-11833, CVE-2019-11884, CVE-2019-3846, CVE-2019-5489, CVE-2019-9500, CVE-2019-9503
SHA-256 | 6462989fedaf07301b47a2563bc368b80ca7dfd5c7c7901bf9c00004dffd9a54
Linux / FreeBSD TCP-Based Denial Of Service
Posted Jun 18, 2019
Authored by Jonathan Looney | Site netflix.com

Netflix has identified several TCP networking vulnerabilities in FreeBSD and Linux kernels. The vulnerabilities specifically relate to the minimum segment size (MSS) and TCP Selective Acknowledgement (SACK) capabilities. The most serious, dubbed _"SACK Panic_," allows a remotely-triggered kernel panic on recent Linux kernels. There are patches that address most of these vulnerabilities. If patches can not be applied, certain mitigations will be effective.

tags | advisory, kernel, tcp, vulnerability
systems | linux, freebsd, bsd
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-5599
SHA-256 | 2842c96d7b20ef5dfb0f2ea06c76a1334026b1cbd1953a2b31793af5c8fa3ba7
Ubuntu Security Notice USN-4017-1
Posted Jun 18, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4017-1 - Jonathan Looney discovered that the TCP retransmission queue implementation in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment sequences. A remote attacker could use this to cause a denial of service. Jonathan Looney discovered that an integer overflow existed in the Linux kernel when handling TCP Selective Acknowledgments. A remote attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, overflow, kernel, tcp
systems | linux, ubuntu
advisories | CVE-2019-11477, CVE-2019-11478
SHA-256 | 2ab9f2ea541fb87d5442119d176290275584ea5d729e49d87b6cbc935e08db2f
Ubuntu Security Notice USN-4017-2
Posted Jun 18, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4017-2 - USN-4017-1 fixed vulnerabilities in the Linux kernel for Ubuntu. This update provides the corresponding updates for the Linux kernel for Ubuntu 16.04 ESM and Ubuntu 14.04 ESM. Jonathan Looney discovered that the TCP retransmission queue implementation in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment sequences. A remote attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, tcp, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-11477, CVE-2019-11478
SHA-256 | 30e2333d67524b336901c1f182fff58c9210ce78ed27a0ac681b4be3e438caf3
Red Hat Security Advisory 2019-1487-01
Posted Jun 18, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1487-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2018-1000004, CVE-2018-7566, CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | 0d2aaa315473f7fa3a1600801f003ad4d585fa316b9020702470ab42aa378bd8
Red Hat Security Advisory 2019-1480-01
Posted Jun 18, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1480-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include denial of service and null pointer vulnerabilities.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-9213
SHA-256 | c97e7d7b7daed86df070782d936f28a68af605c9244804de5e179400e81ca993
Red Hat Security Advisory 2019-1486-01
Posted Jun 18, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1486-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | 3b19d9f90b3322583fe432930185cc3333492df8f763d78f061e16cce38059d8
Red Hat Security Advisory 2019-1484-01
Posted Jun 18, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1484-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | 3d44d46f20f4b63aab3926091c4a7283983615692caed360939015cc0501c44e
Red Hat Security Advisory 2019-1490-01
Posted Jun 18, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1490-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-3896
SHA-256 | 8ff8a4848bb7ccf144f2c1a413bac038475598248dcae1cd4b41d6039ff19148
Red Hat Security Advisory 2019-1485-01
Posted Jun 18, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1485-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | d2d4b02a2eb600606a322cd02179cf3900afb40269dbf46e0d969667deee3520
Red Hat Security Advisory 2019-1489-01
Posted Jun 18, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1489-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-3896
SHA-256 | 45b0b86f0772a80cc1b08646f305ac44ef788c7c7d7a00cea44bafbdd0d9212c
Red Hat Security Advisory 2019-1483-01
Posted Jun 17, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1483-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2018-1000004, CVE-2018-7566, CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | 1a217d5cefbb5641eb992dc6b0dcebb39c2cfb20983cf620352b394e13385350
Red Hat Security Advisory 2019-1482-01
Posted Jun 17, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1482-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | 3c26d4933de700ed32008fe232bf0b5b481901ed98030cd7f187ee8bd9089962
Red Hat Security Advisory 2019-1481-01
Posted Jun 17, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1481-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
SHA-256 | 6cfbd3f8626c8697fb5f0b62389cf6843e06ee0a60d5467b234d8a9835929288
Red Hat Security Advisory 2019-1488-01
Posted Jun 17, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1488-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-3896
SHA-256 | 36497ea43fe2cdf62445777995772c09d638c95ec67c2d50cc020453b75700e3
Red Hat Security Advisory 2019-1479-01
Posted Jun 17, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1479-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include denial of service and null pointer vulnerabilities.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-9213
SHA-256 | 97113cfbe30fbceebe6aa05a8dc231cec04e7b0aa68aa9598e713c3f798a8800
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