The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux…

Description

The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information.

Scores

EPSS (exploitation in 30 days)

0.73% · top 46% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

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 (13)

• 42789 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2011-0024 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• RHSA-2011:0004 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 45029 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 46397 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 35093 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=656206 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d (opens in a new tab)x_refsource_MISCx_transferred
• [oss-security] 20101123 CVE request: xen: request-processing loop is unbounded in blkback (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c (opens in a new tab)x_refsource_MISCx_transferred
• http://www.vmware.com/security/advisories/VMSA-2011-0012.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• [oss-security] 20101124 Re: CVE request: xen: request-processing loop is unbounded in blkback (opens in a new tab)mailing-listx_refsource_MLISTx_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-2010-4247](https://trackcve.app/badge/CVE-2010-4247.svg)](https://trackcve.app/cve/CVE-2010-4247)

Record last updated 7 Aug 2024, 03:34 UTC.