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CVE-2006-4997

21
FAUCET Score

CVE-2006-4997 describes a denial-of-service vulnerability in the Linux kernel's ATM subsystem, specifically within the clip_mkip function in net/atm/clip.c, affecting various Linux distributions including Canonical, Red Hat, and generic Linux kernels. This high-severity flaw (CVSS 7.5) allows remote attackers to cause a system panic by triggering a use-after-free condition on socket buffers, requiring no user interaction or authentication. Despite its age and high EPSS score, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.6.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
5.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:*
6.06CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
6.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:*
2.1CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:2.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.72%
Probability of exploitation in next 30 days
EPSS Percentile
90.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0472 is in the 84th percentile among its peer group of 51,551 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: kernel-0:2.4.18-e.64
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: kernel-0:2.4.9-e.71
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: kernel-0:2.4.21-47.0.1.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel-0:2.6.9-42.0.3.EL
View patch

Vendor Advisories (1)

redhatCVE-2006-4997Moderate

security flaw

Sep 12, 2006

References

bugzilla.redhat.com / bugzilla/show_bug.cgi
ExploitIssue Tracking
secunia.com / advisories/22253
Broken LinkVendor Advisory
secunia.com / advisories/22279
Broken LinkPatchVendor Advisory
secunia.com / advisories/22292
Broken LinkPatchVendor Advisory
secunia.com / advisories/22497
Broken Link
secunia.com / advisories/22762
Broken Link
secunia.com / advisories/22945
Broken Link
secunia.com / advisories/23064
Broken Link
secunia.com / advisories/23370
Broken Link
secunia.com / advisories/23384
Broken Link
secunia.com / advisories/23395
Broken Link
secunia.com / advisories/23474
Broken Link
secunia.com / advisories/23752
Broken Link
secunia.com / advisories/23788
Broken Link
secunia.com / advisories/24288
Broken Link
secunia.com / advisories/25691
Broken Link
securitytracker.com / id
Broken LinkThird Party AdvisoryVDB Entry
exchange.xforce.ibmcloud.com / vulnerabilities/29387
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10388
Broken Link
support.avaya.com / elmodocs2/security/ASA-2006-249.htm
Third Party Advisory
support.avaya.com / elmodocs2/security/ASA-2006-254.htm
Third Party Advisory
support.avaya.com / elmodocs2/security/ASA-2007-078.htm
Third Party Advisory
kernel.org / git
Broken Link
mandriva.com / security/advisories
Broken Link
mandriva.com / security/advisories
Broken Link
mandriva.com / security/advisories
Broken Link
novell.com / linux/security/advisories/2006_79_kernel.html
Broken Link
redhat.com / support/errata/RHSA-2006-0689.html
Broken LinkPatch
redhat.com / support/errata/RHSA-2006-0710.html
Broken Link
redhat.com / support/errata/RHSA-2007-0012.html
Broken Link
redhat.com / support/errata/RHSA-2007-0013.html
Broken Link
securityfocus.com / archive/1/471457
Broken LinkThird Party AdvisoryVDB Entry
securityfocus.com / bid/20363
Broken LinkThird Party AdvisoryVDB Entry
ubuntu.com / usn/usn-395-1
Third Party Advisory
us.debian.org / security/2006/dsa-1233
Broken Link
us.debian.org / security/2006/dsa-1237
Broken Link
vupen.com / english/advisories/2006/3937
Broken Link
vupen.com / english/advisories/2006/3999
Broken Link