CVE-2024-0562 Kernel: use-after-free after removing device in wb_inode_writeback_end in mm/page-writeback.c

What is CVE-2024-0562?

CVE-2024-0562 is a high-severity use after free vulnerability in Linux kernel, published on 15 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 Linux Kernel. When a disk is removed, bdi_unregister is called to stop further write-back and waits for associated delayed work to complete. However, wb_inode_writeback_end() may schedule bandwidth estimation work after this has completed, which can result in the timer attempting to access the recently freed bdi_writeback.

Weakness: CWE-416

Which versions are affected by CVE-2024-0562?

It affects 2 products.

Products include Linux kernel, Redhat Enterprise Linux.

How do I fix CVE-2024-0562?

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-2024-0562 being exploited?

There is no known exploitation of CVE-2024-0562 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-33599, DEBIAN-CVE-2024-0562, GHSA-q94c-x56g-qr59, UBUNTU-CVE-2024-0562.