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CVE-2012-6537

15
FAUCET Score

CVE-2012-6537 is a Linux kernel vulnerability affecting versions before 3.6, specifically within the net/xfrm/xfrm_user.c component, and impacts various Linux distributions including Red Hat Enterprise Linux. This low-severity information disclosure flaw (CVSS 1.9) allows local users with CAP_NET_ADMIN privileges to potentially obtain sensitive kernel memory information due to uninitialized structures. There is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.5.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.0:rc3:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.9LOW

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 68th percentile among its peer group of 747 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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 5Fixed in: kernel-0:2.6.18-348.4.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-358.6.1.el6
View patch

Vendor Advisories (1)

redhatCVE-2012-6537Low

Kernel: xfrm_user information leaks copy_to_user_

Sep 19, 2012

References

git.kernel.org
git.kernel.org
git.kernel.org
rhn.redhat.com / errata/RHSA-2013-0744.html
github.com / torvalds/linux/commit/1f86840f897717f86d523a13e99a447e6a5d2fa5
github.com / torvalds/linux/commit/7b789836f434c87168eab067cfbed1ec4783dffd
github.com / torvalds/linux/commit/f778a636713a435d3a922c60b1622a91136560c1
kernel.org / pub/linux/kernel/v3.x/patch-3.6.bz2
Patch
openwall.com / lists/oss-security/2013/03/05/13
ubuntu.com / usn/USN-1792-1
ubuntu.com / usn/USN-1798-1