CVE-2024-35826 block: Fix page refcounts for unaligned buffers in __bio_release_pages()

Medium 5.5 Published Updated

Incorrect page reference counting in the Linux kernel block layer can lead to resource leaks or crashes when handling unaligned buffers.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2024-35826?

CVE-2024-35826 is a medium-severity vulnerability in Linux kernel, published on 17 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

block: Fix page refcounts for unaligned buffers in __bio_release_pages()

Fix an incorrect number of pages being released for buffers that do not start at the beginning of a page.

Which versions are affected by CVE-2024-35826?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-35826?

Apply the vendor's patch.

Is CVE-2024-35826 being exploited?

There is no known exploitation of CVE-2024-35826 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as AZL-67824, BELL-CVE-2024-35826, DEBIAN-CVE-2024-35826, GHSA-3r27-2vg8-fjmx, ROOT-OS-DEBIAN-11-CVE-2024-35826, ROOT-OS-UBUNTU-2204-CVE-2024-35826 and 1 more.

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