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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

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
MD5 | 8a5ffed193127d301f910a707c542c6b
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
MD5 | cb1a4adb435d9854e70a042c08f9c786
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
MD5 | 1774b94e55cc6f6aa7f8568ff2c9d10f
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
MD5 | 12a0c55fcb16b10cd0ab60c500a5dbda
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
MD5 | a2e7d7ad8cd5265b8a90186bcd82ff4d
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
MD5 | 2c46702ff7e7c931dd0a108fe8cfe05d
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
MD5 | 7a1357fe2ddac55f027509629ebc2f26
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
MD5 | 4904f112d709ed4618af79e5da26a1d7
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
MD5 | 297d0a5fee5b92247c7753bda16c11dd
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
MD5 | e48c2493bf54fe9c5107fa393402498c
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
MD5 | be492b729ad559280a30c04391cde78b
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
MD5 | b8e3e5ccc9ad8795ea5b13709dd46843
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
MD5 | a7c9e1aafbf5889659616bdb3add86cc
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
MD5 | 0a7f981dcb4291b9e74b0d265f202fc0
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
MD5 | 25808b39f25f0a86209ef002f90e0934
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
MD5 | 53b9818bb1e288f064583d003e11f5f2
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
MD5 | 9b1e7306fc16ff68908373eda7c85501
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
MD5 | f456c156d69955016e6c78d40b258445
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
MD5 | 33a8de1c2c07101ed37414e7309d6bb8
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
MD5 | 92a05bc02b91281c82d63163de2e4327
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