Race condition in net/sctp/socket.c in the Linux kernel before 4.1.2 allows local users to cause a denial of service (list corruption and panic) via a rapid series of system calls related to sockets, as demonstrated by setsockopt calls.
CVE-2015-3212
MEDIUMCVSS v2 · 4.94.9—
EchelonGraph scoreLOW confidence
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.9 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:L/AC:L/Au:N/C:N/I:N/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 0.3% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
Sources: epss, nvd_v2
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS v2: 4.9Exploit: None knownExposed services: —
A fix is available — apply it.
Internet exposure
The internet-exposure footprint is temporarily unavailable — the KEV-Exposure radar's record for this CVE could not be loaded just now. That is not a finding of zero exposed services; please retry shortly.
- CVSS v2.0 (legacy)
- 4.9MEDIUMNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 4.9MEDIUMlow confidence
- EG Risk
- 27EG Risk 27/100CISA 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 computedSeverity49% × 45%Exploitation0% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track or 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
- 0.3%
- EPSS %ILE
- 25th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track or 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 unknown (not published for this CVE). 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
August 31, 2015
Last Modified
May 6, 2026
References (40)
- secalert@redhathttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2d45a02d0166caf2627fe91897c6ffc3b19514c4
- secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html
- secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html
- secalert@redhathttp://rhn.redhat.com/errata/RHSA-2015-1778.html
- secalert@redhathttp://rhn.redhat.com/errata/RHSA-2015-1787.html
- secalert@redhathttp://www.debian.org/security/2015/dsa-3329
- secalert@redhathttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.2
- secalert@redhathttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- secalert@redhathttp://www.securityfocus.com/bid/76082
- secalert@redhathttp://www.securitytracker.com/id/1033169
- secalert@redhathttp://www.ubuntu.com/usn/USN-2713-1
- secalert@redhathttp://www.ubuntu.com/usn/USN-2714-1
- secalert@redhathttp://www.ubuntu.com/usn/USN-2715-1
- secalert@redhathttp://www.ubuntu.com/usn/USN-2716-1
- secalert@redhathttp://www.ubuntu.com/usn/USN-2717-1
Vendor Advisories for CVE-2015-3212
Vendor advisories for this CVE are temporarily unavailable — the list could not be loaded just now. That is not a sign that none exist; please retry shortly.
Related CVEs(same product + same vendor)· as of October 4, 2026
Same product
10 shownDebian:7:linux
- CVE-2015-8104EG 10.0CRITICAL
- CVE-2017-18017EG 9.8EPSS p99CRITICAL
- CVE-2017-7895EG 9.8EPSS p96CRITICAL
- CVE-2016-3955EG 9.8EPSS p98CRITICAL
- CVE-2015-8812EG 9.8EPSS p97CRITICAL
- CVE-2015-3331EG 9.3EPSS p96HIGH
- CVE-2016-5195NVD 7.0EG 9.0 KEVEPSS p100CRITICAL
- CVE-2017-5754NVD 5.6EG 8.9EPSS p100HIGH
- CVE-2017-12134EG 8.8HIGH
- CVE-2016-3134EG 8.4HIGH
Frequently asked(4)
What is CVE-2015-3212?
CVE-2015-3212 is a medium vulnerability published on August 31, 2015. Race condition in net/sctp/socket.c in the Linux kernel before 4.1.2 allows local users to cause a denial of service (list corruption and panic) via a rapid series of system calls related to sockets, as demonstrated by setsockopt calls.
When was CVE-2015-3212 disclosed?
CVE-2015-3212 was first published on August 31, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-3212 actively exploited?
CVE-2015-3212 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
How do I remediate CVE-2015-3212?
A fix for CVE-2015-3212 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
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