CVE-2024-53136 mm: revert "mm: shmem: fix data-race in shmem_getattr()"

High 7.5 Published Updated

A race condition in the Linux kernel's shmem subsystem causes deadlocks when accessing tmpfs over NFS, leading to denial of service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2024-53136?

CVE-2024-53136 is a high-severity vulnerability in Linux kernel, published on 4 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

mm: revert "mm: shmem: fix data-race in shmem_getattr()"

Revert d949d1d14fa2 ("mm: shmem: fix data-race in shmem_getattr()") as suggested by Chuck [1]. It is causing deadlocks when accessing tmpfs over NFS.

As Hugh commented, "added just to silence a syzbot sanitizer splat: added where there has never been any practical problem".

Weakness: CWE-362

Which versions are affected by CVE-2024-53136?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-53136?

Apply the vendor's patch.

Is CVE-2024-53136 being exploited?

There is no known exploitation of CVE-2024-53136 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as AZL-54185, BELL-CVE-2024-53136, DEBIAN-CVE-2024-53136, GHSA-33rw-2cg2-2mpc, UBUNTU-CVE-2024-53136.

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