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Unscored Public exploit CVE-2018-5873 EUVD-2018-17640GHSA-w7cq-36jp-q6wg

An issue was discovered in the __ns_get_path function in fs/nsfs.c in the Linux kernel before 4.11. Due to a race condition when accessing …

Published Jul 6, 2018 · Updated Sep 17, 2024 · Assigned by qualcomm

Vendor: Qualcomm Product: Android for MSM, Firefox OS for MSM, QRD Android Package: linux Package: linux Package: linux-aws Package: linux-azure-edge Package: linux-azure-fde Package: linux-fips Package: linux-gcp Package: linux-gke Package: linux-hwe Package: linux-intel-iot-realtime Package: linux-kvm Package: linux-lts-xenial Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-snapdragon Package: linux-vmware Platform: Android Category: Browsers Ecosystem: Debian Ecosystem: Ubuntu

Description

An issue was discovered in the __ns_get_path function in fs/nsfs.c in the Linux kernel before 4.11. Due to a race condition when accessing files, a Use After Free condition can occur. This also affects all Android releases from CAF using the Linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) before security patch level 2018-07-05.

Affected products

VendorProductAffectedFixed
Qualcomm Android for MSM, Firefox OS for MSM, QRD Android All Android releases from CAF using the Linux kernel —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 4.11.6-1 —
Debian 13 linux 4.11.6-1 —
Debian 12 linux 4.11.6-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS linux-vmware No fix yet —
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-riscv +2 No fix yet —
Ubuntu 20.04 LTS linux-gke +3 No fix yet —
Ubuntu 18.04 LTS linux-azure-edge No fix yet —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux 4.4.0-121.145 —
Ubuntu 16.04 LTS linux-aws 4.4.0-1055.64 —
Ubuntu 16.04 LTS linux-gcp 4.13.0-1002.5 —
Ubuntu 16.04 LTS linux-hwe 4.13.0-32.35~16.04.1 —
Ubuntu 16.04 LTS linux-kvm 4.4.0-1021.26 —
Ubuntu 16.04 LTS linux-raspi2 4.4.0-1087.95 —
Ubuntu 16.04 LTS linux-snapdragon 4.4.0-1090.95 —
Ubuntu 14.04 LTS linux-aws 4.4.0-1017.17 —
Ubuntu 14.04 LTS linux-lts-xenial 4.4.0-121.145~14.04.1 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1008.10 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 7 kernel-uek +5 4.1.12-124.19.5.el7uek ELSA-2018-4227

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References