CVE-2011-2695 Integer overflow in n/a

Medium 4.9 Published Updated

Local attackers can crash the system via off-by-one errors in the ext4 subsystem when writing to sparse files with large block numbers.

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-2011-2695?

CVE-2011-2695 is a medium-severity vulnerability in Linux kernel, published on 28 Jul 2011. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.

Weakness: CWE-193

Which versions are affected by CVE-2011-2695?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2011-2695?

Upgrade to a fixed version.

Is CVE-2011-2695 being exploited?

There is no known exploitation of CVE-2011-2695 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as GHSA-jfqm-6wmx-xx52.

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