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CVE-2007-1861

27
FAUCET Score

CVE-2007-1861 describes a denial-of-service vulnerability in the Linux Kernel, specifically affecting versions prior to 2.6.20.8. An attacker can trigger a kernel panic by sending crafted NETLINK_FIB_LOOKUP replies, leading to infinite recursion and a stack overflow within the nl_fib_lookup function. This vulnerability has a CVSS score of 4.9, indicating a local attack vector with low complexity, resulting in a complete loss of availability. While not actively exploited in the wild and not on the CISA KEV catalog, a local denial-of-service exploit is publicly available on ExploitDB, though it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.20.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
2.6.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:*
2.6.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:*
2.6.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.3:*:*:*:*:*:*:*

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
1.02%
Probability of exploitation in next 30 days
EPSS Percentile
59.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-29916 · Apr 26, 2007
This CVE's current EPSS score of 0.0102 is in the 91st percentile among its peer group of 3,050 CVEs.

Social Chatter

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 (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-8.1.4.el5
View patch

Vendor Advisories (1)

redhatCVE-2007-1861Important

infinite recursion in netlink

Apr 25, 2007

References

kernel.org / pub/linux/kernel/v2.6/ChangeLog-2.6.20.8
bugzilla.redhat.com / bugzilla/show_bug.cgi
secunia.com / advisories/25030
Vendor Advisory
secunia.com / advisories/25083
Vendor Advisory
secunia.com / advisories/25228
Vendor Advisory
secunia.com / advisories/25288
Vendor Advisory
secunia.com / advisories/25691
Vendor Advisory
secunia.com / advisories/25961
Vendor Advisory
secunia.com / advisories/26133
Vendor Advisory
secunia.com / advisories/26139
Vendor Advisory
secunia.com / advisories/26620
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/34014
issues.rpath.com / browse/RPL-1309
Patch
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11616
debian.org / security/2007/dsa-1289
mandriva.com / security/advisories
novell.com / linux/security/advisories/2007_43_kernel.html
redhat.com / support/errata/RHSA-2007-0347.html
securityfocus.com / archive/1/467939/30/6690/threaded
securityfocus.com / archive/1/471457
securityfocus.com / bid/23677
ubuntu.com / usn/usn-486-1
ubuntu.com / usn/usn-489-1
vupen.com / english/advisories/2007/1595
Vendor Advisory