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CVE-2006-6921

11
FAUCET Score

CVE-2006-6921 describes a denial-of-service vulnerability in unspecified versions of the Linux kernel, allowing local users to create unrecoverable zombie processes. This issue arises when a program with specific instructions prevents the 'init' process from properly reaping a child process whose parent has terminated. With a CVSS score of 2.1, this vulnerability is considered low severity, requiring local access and resulting in only partial availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.20.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.20.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 70th percentile among its peer group of 2,096 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, 0.0 Bluesky, 0.0 Mastodon, and 0.6 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 4Fixed in: kernel-0:2.6.9-55.0.12.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-53.1.14.el5
View patch

Vendor Advisories (1)

redhatCVE-2006-6921Moderate

kernel: denial of service with wedged processes

Dec 19, 2006

References

secunia.com / advisories/27436
Vendor Advisory
secunia.com / advisories/27747
Vendor Advisory
secunia.com / advisories/29236
Vendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10834
support.avaya.com / elmodocs2/security/ASA-2007-474.htm
uwsg.iu.edu / hypermail/linux/kernel/0612.2/0980.html
Exploit
uwsg.iu.edu / hypermail/linux/kernel/0612.2/1021.html
redhat.com / support/errata/RHSA-2007-0939.html
redhat.com / support/errata/RHSA-2008-0154.html