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CVE-2012-1583

19
FAUCET Score

CVE-2012-1583 describes a double free vulnerability in the xfrm6_tunnel_rcv function within the Linux kernel, specifically affecting versions prior to 2.6.22 when the xfrm6_tunnel module is enabled. This flaw allows remote attackers to trigger a denial of service (system panic) through specially crafted IPv6 packets. The vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and no authentication required, leading to a potential impact of system availability loss. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.21.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.0:test1:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.0:test10:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.0:test11:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.62%
Probability of exploitation in next 30 days
EPSS Percentile
88.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0362 is in the 85th percentile among its peer group of 23,701 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 (5)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-308.4.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5.6 EUS - Server OnlyFixed in: kernel-0:2.6.18-238.39.1.el5
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2012-1583Important

kernel: ipv6: panic using raw sockets

Apr 17, 2012

References

ftp.osuosl.org / pub/linux/kernel/v2.6/ChangeLog-2.6.22
git.kernel.org
marc.info
rhn.redhat.com / errata/RHSA-2012-0488.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/48881
github.com / torvalds/linux/commit/d0772b70faaf8e9f2013b6c4273d94d5eac8047a
ExploitPatch
securityfocus.com / bid/53139
securitytracker.com / id