CVE-2013-2140

Public Exploit

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.

Category

3.8
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-1943-1 vendor advisory
http://www.ubuntu.com/usn/USN-2039-1 vendor advisory
http://www.ubuntu.com/usn/USN-1938-1 vendor advisory
http://www.ubuntu.com/usn/USN-1944-1 vendor advisory
http://www.ubuntu.com/usn/USN-1945-1 vendor advisory
http://www.ubuntu.com/usn/USN-2038-1 vendor advisory
http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-2140.html
http://www.openwall.com/lists/oss-security/2013/06/05/21 mailing list
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=604c499cbbcc3d5fe5fb8d53306aa0fae1990109
https://github.com/torvalds/linux/commit/604c499cbbcc3d5fe5fb8d53306aa0fae1990109 patch exploit
http://www.ubuntu.com/usn/USN-1947-1 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=971146
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.5
http://www.ubuntu.com/usn/USN-1946-1 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-2140?
CVE-2013-2140 has been scored as a low severity vulnerability.
How to fix CVE-2013-2140?
To fix CVE-2013-2140, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-2140 being actively exploited in the wild?
It is possible that CVE-2013-2140 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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