CVE-2013-2140

Severity: low (CVSS 3.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-09-25 · updated 2026-06-16
Weakness: CWE-20

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.

Affected products

Linux kernel: through 3.10.4; 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+248)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=604c499cbbcc3d5fe5fb8d53306aa0fae1990109
http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-2140.html
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.5
http://www.openwall.com/lists/oss-security/2013/06/05/21
http://www.ubuntu.com/usn/USN-1938-1
http://www.ubuntu.com/usn/USN-1943-1
http://www.ubuntu.com/usn/USN-1944-1
http://www.ubuntu.com/usn/USN-1945-1
http://www.ubuntu.com/usn/USN-1946-1
http://www.ubuntu.com/usn/USN-1947-1
http://www.ubuntu.com/usn/USN-2038-1
http://www.ubuntu.com/usn/USN-2039-1

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