In the Linux kernel, a certain net/ipv4/tcp_output.c change, which was properly incorporated into 4.16.12, was incorrectly backported to the earlier longterm kernels, introducing a new vulnerability that was potentially more severe than the issue that was intended to be fixed by backporting. Specifically, by adding to a write queue between disconnection and re-connection, a local attacker can trigger multiple use-after-free conditions. This can result in a kernel crash, or potentially in privilege escalation. NOTE: this affects (for example) Linux distributions that use 4.9.x longterm kernels before 4.9.190 or 4.14.x longterm kernels before 4.14.139.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernel-rtUpgrade kpatch-patch-3_10_0-1062_4_1Upgrade kpatch-patch-3_10_0-1062_4_3Upgrade kpatch-patch-3_10_0-1062_1_2Upgrade kpatch-patch-3_10_0-1062_4_1-debuginfoUpgrade kpatch-patch-3_10_0-1062_1_1Upgrade kpatch-patch-3_10_0-1062_1_2-debuginfoUpgrade kpatch-patch-3_10_0-1062_1_1-debuginfoUpgrade kernelUpgrade kpatch-patch-3_10_0-1062-debuginfoUpgrade kpatch-patch-3_10_0-1062_4_2Upgrade kpatch-patch-3_10_0-1062 | Nov 27, 2019 | Aug 20, 2019 |
| Debian | — | Upgrade linux | Aug 21, 2019 | Aug 21, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade kernel-tools-libsUpgrade python-perfUpgrade kernel-toolsUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernelUpgrade kernel-develUpgrade perf | Nov 19, 2019 | Aug 20, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade kernelUpgrade kernel-headersUpgrade python-perfUpgrade kernel-develUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade perf | Nov 19, 2019 | Aug 20, 2019 |
| Oracle_linux | — | Upgrade kernel-uekUpgrade kernel | Oct 3, 2019 | Aug 20, 2019 |
| Redhat_linux | — | Upgrade kpatch-patch-3_10_0-1062_4_1-debuginfoUpgrade kpatch-patch-3_10_0-1062_1_1Upgrade kpatch-patch-3_10_0-1062_4_1Upgrade kpatch-patch-3_10_0-1062_1_1-debuginfoUpgrade kernelUpgrade kpatch-patch-3_10_0-1062_1_2-debuginfoUpgrade kpatch-patch-3_10_0-1062_4_2Upgrade kpatch-patch-3_10_0-1062_4_3Upgrade kpatch-patch-3_10_0-1062Upgrade kpatch-patch-3_10_0-1062_1_2Upgrade kpatch-patch-3_10_0-1062-debuginfoUpgrade kernel-rt | Nov 27, 2019 | Aug 20, 2019 |
| Suse | — | Upgrade kernel-defaultUpgrade kernel-docsUpgrade kernel-obs-buildUpgrade kernel-default-extraUpgrade kernel-default-manUpgrade kernel-azure-baseUpgrade kernel-devel-azureUpgrade kernel-source-azure | Sep 21, 2019 | Aug 20, 2019 |
| Ubuntu | — | Upgrade linux-snapdragonUpgrade linux-awsUpgrade linux-lts-xenialUpgrade linuxUpgrade linux-raspi2Upgrade linux-fipsUpgrade linux-kvm | Nov 19, 2024 | Aug 20, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Aug 20, 2019 |
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