CVE-2010-4247: n/a vulnerability

CVE-2010-4247: The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 03:34 UTC (UTC+00:00)

Security readout for executives and security teams

A user inside a Xen guest VM could trigger excessive CPU use in host-side block I/O handling, causing a denial of service. The business risk is service disruption on older Xen-based virtualization hosts, especially where untrusted or less-trusted guests share infrastructure. Exposure is most likely on legacy Xen virtualization hosts using affected Linux 2.6.18 Xen blkback or blktap back-end drivers. The source bundle does not provide complete CPEs, exact vendor package ranges, or confirmation for all possibly affected versions. Prioritize if the organization still runs legacy Xen or affected vendor virtualization stacks with shared tenants. This is mainly an availability issue, but a single guest could affect host resources and potentially disrupt multiple workloads. Mitigation focus: Inventory Xen hosts and identify Linux 2.6.18 Xen blkback or blktap usage.; Apply relevant vendor security updates, such as Red Hat or VMware advisories if applicable.; Upgrade away from affected Xen versions; sources indicate Xen before 3.4.0 is affected..

Prepared: Jun 28, 2026, 01:17 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 11, 2011, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.redhat.com/show_bug.cgi?id=656206CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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