The dispatch_discard_io function in drivers/block/xen-blkback/blkback.c in the Xen blkback implementation in the Linux kernel before…

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.

Scores

EPSS (exploitation in 30 days)

1.0% · top 37% of all CVEs (3 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.8.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (14)

• USN-1943-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-2039-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-1938-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-1944-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-1945-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-2038-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-2140.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• [oss-security] 20130605 Re: xen/blkback: Check device permissions before allowing OP_DISCARD (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=604c499cbbcc3d5fe5fb8d53306aa0fae1990109 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://github.com/torvalds/linux/commit/604c499cbbcc3d5fe5fb8d53306aa0fae1990109 (opens in a new tab)x_refsource_CONFIRMx_transferred
• USN-1947-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=971146 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.5 (opens in a new tab)x_refsource_CONFIRMx_transferred
• USN-1946-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2013-2140](https://trackcve.app/badge/CVE-2013-2140.svg)](https://trackcve.app/cve/CVE-2013-2140)

Record last updated 6 Aug 2024, 15:27 UTC.