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NVD / CVE Program· CNA redhat

CVE-2012-6657: The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a keepalive action is associated with…

MediumCVSS 4.9 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 19/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.53% (FIRST EPSS).
  • No special conditions are required; it is repeatable.
  • Fixed version: linux (Debian:12) 3.6.4-1; linux-2.6 (Debian:6.0) 2.6.32-48squeeze9; kernel (Red Hat:enterprise_linux:6::client) 0:2.6.32-504.3.3.el6.

Low priority for now. Upgrade to linux (Debian:12) 3.6.4-1; linux-2.6 (Debian:6.0) 2.6.32-48squeeze9; kernel (Red Hat:enterprise_linux:6::client) 0:2.6.32-504.3.3.el6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a keepalive action is associated with a stream socket, which allows local users to cause a denial of service (system crash) by leveraging the ability to create a raw socket.

Published
Sep 28, 2014
Updated
Jun 16, 2026
EPSS
0.5% · 45th percentile

Report tools

JSON

Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
novellsuse linux enterprise server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelup to 3.5.6 inclusive
  • linux linux kernel3.5.1
  • linux linux kernel3.5.2
  • linux linux kernel3.5.3
  • linux linux kernel3.5.4
  • linux linux kernel3.5.5
  • novell suse linux enterprise server10.0
  • novell suse linux enterprise server11.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 3.6.4-13.6.4-1
Debian:6.0linux-2.6before 2.6.32-48squeeze92.6.32-48squeeze9
Red Hat:enterprise_linux:6::clientkernelbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-abi-whitelistsbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-debugbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-debug-debuginfobefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-debug-develbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfobefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfo-common-i686before 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfo-common-x86_64before 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-develbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-docbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-firmwarebefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientkernel-headersbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientperfbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientperf-debuginfobefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientpython-perfbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::clientpython-perf-debuginfobefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::serverkernel-bootwrapperbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::serverkernel-debuginfo-common-ppc64before 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::serverkernel-debuginfo-common-s390xbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::serverkernel-kdumpbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::serverkernel-kdump-debuginfobefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6
Red Hat:enterprise_linux:6::serverkernel-kdump-develbefore 0:2.6.32-504.3.3.el60:2.6.32-504.3.3.el6

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2014-5471Aug 31, 2014 · Stack consumption vulnerability in the parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel through 3.16.1…
    16Monitor
  • ← EarlierCVE-2014-5472Aug 31, 2014 · The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel through 3.16.1 allows local users to cause a denial of…
    16Monitor
  • Later →CVE-2014-3181Sep 28, 2014 · Multiple stack-based buffer overflows in the magicmouse_raw_event function in drivers/hid/hid-magicmouse.c in the Magic Mouse HID driver in…
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:linux3.6.4-1 · Debian:12Package registry (OSV)
debian:linux-2.62.6.32-48squeeze9 · Debian:6.0Package registry (OSV)
red hat:kernel0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-abi-whitelists0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debug0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debug-debuginfo0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debug-devel0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debuginfo0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debuginfo-common-i6860:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debuginfo-common-x86_640:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-devel0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-doc0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-firmware0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-headers0:2.6.32-504.3.3.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
C

Weakness class (CWE)

CWE-264 · Permissions, Privileges, and Access Controls

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records