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CVE-2007-5498

15
FAUCET Score

CVE-2007-5498 describes a denial-of-service vulnerability in the Xen hypervisor's block backend driver for Linux kernel 2.6.18. A privileged user within a 32-bit paravirtualized guest on a 64-bit host can crash the host OS by requesting an excessive number of blocks. This local attack has low complexity and results in a complete loss of availability for the host. There is no known exploit code available, and it has received negligible community or media attention, indicating it is not actively exploited.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.18:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

AV:L/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 39th percentile among its peer group of 3,050 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-53.1.19.el5
View patch
redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2007-5498Important

missing sanity check in xen block backend driver

Apr 22, 2008

References

bugzilla.redhat.com / show_bug.cgi
Patch
secunia.com / advisories/30116
secunia.com / advisories/32918
exchange.xforce.ibmcloud.com / vulnerabilities/42274
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9452
redhat.com / support/errata/RHSA-2008-0233.html
securityfocus.com / bid/29082
ubuntu.com / usn/usn-679-1