CVE-2012-6704

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUF or (2) SO_RCVBUF option.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

December 28, 2016

Last Modified

June 16, 2026

Advisory Details (5)

Auto-updated Sep 29, 2026
Patch available. Sources: redhat, github_commit.
github_commit

commit 82981930125a (torvalds/linux)

Fix landed in torvalds/linux commit 82981930125a — awaiting tagged release

https://github.com/torvalds/linux/commit/82981930125abfd39d7c8378a9cfdf5e1be2002b
redhat

1402024 – (CVE-2012-6704) CVE-2012-6704 kernel: Signed overflows in SO_{SND|RCV}BUF in sock_setsockopt()

Affected: Red Hat Enterprise Linux 5, 6, 7, MRG-2 and realtime.

https://bugzilla.redhat.com/show_bug.cgi?id=1402024
generic

CVE-2012-6704 - PSIRT.COM

http://www.securityfocus.com/bid/95135
generic

oss-security - Re: CVE Request: Linux: signed overflows for SO_{SND|RCV}BUFFORCE

http://www.openwall.com/lists/oss-security/2016/12/03/1
generic

net: cleanups in sock_setsockopt() - kernel/git/torvalds/linux.git - Linux kernel source tree

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=82981930125abfd39d7c8378a9cfdf5e1be2002b

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 3.8.11-1: fixed in 3.8.11-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 3.8.11-1: fixed in 3.8.11-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 3.8.11-1: fixed in 3.8.11-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 3.8.11-1: fixed in 3.8.11-1
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
linux3.2.41-2 ... 3.2.82-1 (61 versions)
  • every version up to 3.2.84-1: fixed in 3.2.84-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 4× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 144 total refreshes for this CVE.

  1. 2026-10-05 17:38 UTCEPSS rescore
  2. 2026-10-04 23:16 UTCEPSS rescore
  3. 2026-09-30 14:58 UTCEPSS rescore
  4. 2026-09-29 08:34 UTCEG score recompute
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  21. 2026-08-30 21:34 UTCOSV refresh
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  1. 2026-08-21 23:44 UTCEPSS rescore
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  7. 2026-08-14 08:16 UTCOSV refresh
  8. 2026-08-12 13:45 UTCEPSS rescore
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  17. 2026-07-29 16:07 UTCOSV refresh
  18. 2026-07-28 15:31 UTCEPSS rescore
  19. 2026-07-25 14:12 UTCEPSS rescore
  20. 2026-07-23 14:14 UTCEPSS rescore
  21. 2026-07-23 01:09 UTCEG score recompute
  22. 2026-07-23 00:12 UTCEG score recompute
  23. 2026-07-22 21:50 UTCEG score recompute
  24. 2026-07-22 14:04 UTCEPSS rescore
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  26. 2026-07-21 15:21 UTCEPSS rescore
  27. 2026-07-20 17:03 UTCEPSS rescore
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  40. 2026-07-12 05:22 UTCOSV refresh
  41. 2026-07-11 08:23 UTCEPSS rescore
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  48. 2026-06-30 23:19 UTCEPSS rescore
  49. 2026-06-30 23:19 UTCEPSS rescore
  50. 2026-06-28 14:03 UTCEPSS rescore
  51. 2026-06-28 04:53 UTCEPSS rescore
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  54. 2026-06-25 13:46 UTCEPSS rescore
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  58. 2026-06-23 11:30 UTCOSV refresh
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  73. 2026-06-14 23:14 UTCEPSS rescore
  74. 2026-06-13 22:57 UTCEPSS rescore
  75. 2026-06-12 23:08 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2012-6704?
CVE-2012-6704 is a high vulnerability published on December 28, 2016. The socksetsockopt function in net/core/sock.c in the Linux kernel before 3.5 mishandles negative values of sksndbuf and skrcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAPNETADMIN…
When was CVE-2012-6704 disclosed?
CVE-2012-6704 was first published on December 28, 2016, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-6704 actively exploited?
CVE-2012-6704 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2012-6704?
CVE-2012-6704 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2012-6704?
A fix for CVE-2012-6704 is available: update to the fixed version the vendor names in its advisory.

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