CVE-2017-7374 Use after free in n/a

What is CVE-2017-7374?

CVE-2017-7374 is a high-severity use after free vulnerability in Linux kernel, published on 31 Mar 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-476, CWE-416

Which versions are affected by CVE-2017-7374?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-7374?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2017-7374 being exploited?

There is no known exploitation of CVE-2017-7374 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2017-7374, GHSA-hg37-8m7v-x2rc, UBUNTU-CVE-2017-7374.