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Unscored Public exploit CVE-2017-7374 EUVD-2017-16401GHSA-hg37-8m7v-x2rc

Use-after-free vulnerability in fs/crypto/ in the Linux kernel before 4.10.7 allows local users to cause a denial of service (NULL pointer …

Published Mar 31, 2017 · Updated Aug 5, 2024 · Assigned by mitre

Package: linux Package: linux Package: linux-aws Package: linux-azure Package: linux-azure-fde Package: linux-gcp Package: linux-gke Package: linux-hwe Package: linux-hwe-edge Package: linux-intel-iot-realtime Package: linux-lts-xenial Package: linux-oem Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-snapdragon Ecosystem: Debian Ecosystem: Ubuntu

Description

Use-after-free vulnerability in fs/crypto/ in the Linux kernel before 4.10.7 allows local users to cause a denial of service (NULL pointer dereference) or possibly gain privileges by revoking keyring keys being used for ext4, f2fs, or ubifs encryption, causing cryptographic transform objects to be freed prematurely.

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 4.9.25-1 —
Debian 13 linux 4.9.25-1 —
Debian 12 linux 4.9.25-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
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-gcp +4 No fix yet —
Ubuntu 16.04 LTS linux 4.4.0-75.96 USN-3265-1
Ubuntu 16.04 LTS linux-aws 4.4.0-1016.25 USN-3265-1
Ubuntu 16.04 LTS linux-gke 4.4.0-1012.12 USN-3265-1
Ubuntu 16.04 LTS linux-hwe 4.10.0-32.36~16.04.1 USN-3342-2
Ubuntu 16.04 LTS linux-raspi2 4.4.0-1054.61 USN-3265-1
Ubuntu 16.04 LTS linux-snapdragon 4.4.0-1057.61 USN-3265-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 14.04 LTS linux-lts-xenial 4.4.0-75.96~14.04.1 USN-3265-2

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 12 SP2 kernel-default +1 4.4.59-92.17.3 SUSE-SU-2017:1183-1
SLES 12 SP2 kernel-docs 4.4.59-92.17.8 SUSE-SU-2017:1183-1
SLES 12 SP2 kernel-syms +1 4.4.59-92.17.2 SUSE-SU-2017:1183-1
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 12 SP2 kernel-default 4.4.59-92.17.3 SUSE-SU-2017:1183-1
SLES for SAP 12 SP2 kernel-syms +1 4.4.59-92.17.2 SUSE-SU-2017:1183-1
SLE Real Time 12 SP2 kernel-rt +3 4.4.74-7.10.1 SUSE-SU-2017:1990-1
SLE Live Patching 12 kgraft-patch-SLE12-SP2_Update_7 1-2.3 SUSE-SU-2017:1183-1

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 5

References