Home/CVE/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
CVE

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 before 3.4.0

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.

MEDIUM · CVSS 5.5 EPSS 0.00615
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

2
citrix xen<= 3.3.2
citrix xenall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v2 (legacy) · secalert@redhat.com
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:A/AC:L/Au:S/C:N/I:N/A:C
Published to NVD11 Jan 2011 · 03:00 AM
⚑

Vendor Advisories

2
usnUSN-1170-1
rhsaRHSA-2011:0004Moderate
🔗

References & Sources

13
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://secunia.com/advisories/35093Vendor Advisory
http://secunia.com/advisories/42789
http://secunia.com/advisories/46397
http://www.openwall.com/lists/oss-security/2010/11/23/1Patch
http://www.openwall.com/lists/oss-security/2010/11/24/8Patch
http://www.redhat.com/support/errata/RHSA-2011-0004.html
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