CVE-2024-26677 rxrpc: Fix delayed ACKs to not set the reference serial number

Medium 5.5 Published Updated

A null pointer dereference in the Linux kernel's rxrpc module can cause a system crash, requiring a kernel patch.

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-2024-26677?

CVE-2024-26677 is a medium-severity vulnerability in Linux kernel, published on 2 Apr 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:

rxrpc: Fix delayed ACKs to not set the reference serial number

Fix the construction of delayed ACKs to not set the reference serial number as they can't be used as an RTT reference.

Weakness: CWE-476

Which versions are affected by CVE-2024-26677?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-26677?

Apply the vendor's patch.

Is CVE-2024-26677 being exploited?

There is no known exploitation of CVE-2024-26677 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as AZL-58701, BELL-CVE-2024-26677, DEBIAN-CVE-2024-26677, GHSA-9gh2-p9fc-q3cr, ROOT-OS-DEBIAN-11-CVE-2024-26677, ROOT-OS-DEBIAN-12-CVE-2024-26677 and 1 more.

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