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CVE-2007-6712

15
FAUCET Score

CVE-2007-6712 describes an integer overflow vulnerability in the hrtimer_forward function of the Linux kernel (versions up to 2.6.21-rc4) on 64-bit systems. This flaw allows a local attacker to trigger a denial of service by setting a timer with an excessively large expiry value, leading to an infinite loop. The vulnerability has a CVSS score of 4.9, indicating a low attack complexity and requiring local access, with the primary impact being system availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.21_rc4CPE matchmatch criteria
cpe:2.3:a:kernel:linux_kernel:2.6.21_rc4:*:x64:*:*:*:*:*

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
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 57th percentile among its peer group of 3,049 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: MRG for RHEL-5Fixed in: kernel-rt-0:2.6.24.7-74.el5rt
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-53.1.21.el5
View patch

Vendor Advisories (1)

redhatCVE-2007-6712Important

kernel: infinite loop in highres timers (kernel hang)

Mar 16, 2007

References

git.kernel.org
lists.opensuse.org / opensuse-security-announce/2008-06/msg00006.html
secunia.com / advisories/30294
secunia.com / advisories/30368
secunia.com / advisories/30818
secunia.com / advisories/31107
secunia.com / advisories/31628
exchange.xforce.ibmcloud.com / vulnerabilities/41827
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9210
debian.org / security/2008/dsa-1588
redhat.com / support/errata/RHSA-2008-0275.html
redhat.com / support/errata/RHSA-2008-0585.html
securityfocus.com / bid/29294
ubuntu.com / usn/usn-625-1