CVE-2024-0775 Kernel: use-after-free while changing the mount option in __ext4_remount leading

What is CVE-2024-0775?

CVE-2024-0775 is a medium-severity use after free vulnerability in Linux kernel, published on 22 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A use-after-free flaw was found in the __ext4_remount in fs/ext4/super.c in ext4 in the Linux kernel. This flaw allows a local user to cause an information leak problem while freeing the old quota file names before a potential failure, leading to a use-after-free.

Weakness: CWE-416

Which versions are affected by CVE-2024-0775?

It affects 2 products.

Products include Linux kernel, Redhat Enterprise Linux.

How do I fix CVE-2024-0775?

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-2024-0775 being exploited?

There is no known exploitation of CVE-2024-0775 in the wild and no public exploit code.

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 AZL-33968, BELL-CVE-2024-0775, DEBIAN-CVE-2024-0775, GHSA-w57v-9x67-753v, SUSE-SU-2024:1491-1, UBUNTU-CVE-2024-0775.