CVE-2013-2140 Denial of service in n/a
Guest OS users can cause data loss and denial of service by writing to read-only disks supporting discard or UNMAP features in the Linux kernel.
- 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-2013-2140?
CVE-2013-2140 is a low-severity denial of service vulnerability in Linux kernel, published on 25 Sep 2013. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The dispatch_discard_io function in drivers/block/xen-blkback/blkback.c in the Xen blkback implementation in the Linux kernel before 3.10.5 allows guest OS users to cause a denial of service (data loss) via filesystem write operations on a read-only disk that supports the (1) BLKIF_OP_DISCARD (aka discard or TRIM) or (2) SCSI UNMAP feature.
Weakness: CWE-20
Which versions are affected by CVE-2013-2140?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2013-2140?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2013-2140 being exploited?
There is no known exploitation of CVE-2013-2140 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2013-2140, GHSA-qw94-9pv3-h4jx.