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CVE-2015-1421· NVD / CVE Program· CNA mitre

Use-after-free vulnerability in the sctp_assoc_update function in net/sctp/associola.c in the Linux kernel before 3.18.8 allows remote attac

Noroxi assessment

Priority: Plan (action score 43/100)

  • 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: 9.8% (FIRST EPSS); higher than 95.5% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: linux (Debian:12) 3.16.7-ckt4-3; linux-2.6 (Debian:6.0) 2.6.32-48squeeze11; linux (Debian:7) 3.2.65-1+deb7u2.

Add it to your regular patch cycle. Upgrade to linux (Debian:12) 3.16.7-ckt4-3; linux-2.6 (Debian:6.0) 2.6.32-48squeeze11; linux (Debian:7) 3.2.65-1+deb7u2 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

Use-after-free vulnerability in the sctp_assoc_update function in net/sctp/associola.c in the Linux kernel before 3.18.8 allows remote attackers to cause a denial of service (slab corruption and panic) or possibly have unspecified other impact by triggering an INIT collision that leads to improper handling of shared-key data.

CriticalCVSS 10.0 · v2.0—No exploit Fix available
Published
Mar 16, 2015
Updated
Jun 16, 2026
EPSS
9.8% · 95th percentile
CWE
—

Report tools

JSON

Action score

43

Plan

Add it to your regular patch cycle.

CVSS
40 / 40 · 10.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
3 / 30 · 9.8%

Get told when this record changes

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

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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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
canonicalubuntu linux
debiandebian linux

Affected versions

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

  • canonical ubuntu linux12.04
  • canonical ubuntu linux14.04
  • canonical ubuntu linux14.10
  • debian debian linux7.0
  • debian debian linux8.0
  • linux linux kernel3.15 and later · before 3.16.35
  • linux linux kernel2.6.24 and later · before 3.2.67
  • linux linux kernel3.17 and later · before 3.18.8
  • linux linux kernel3.3 and later · before 3.4.107
  • linux linux kernel3.5 and later · before 3.10.70
  • linux linux kernel3.11 and later · before 3.12.38
  • linux linux kernel3.13 and later · before 3.14.34

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 3.16.7-ckt4-33.16.7-ckt4-3
Debian:6.0linux-2.6before 2.6.32-48squeeze112.6.32-48squeeze11
Debian:7linuxbefore 3.2.65-1+deb7u23.2.65-1+deb7u2
Red Hat:enterprise_linux:6::clientkernelbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-abi-whitelistsbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-debugbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-debug-debuginfobefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-debug-develbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfobefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfo-common-i686before 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfo-common-x86_64before 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-develbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-docbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-firmwarebefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientkernel-headersbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientperfbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientperf-debuginfobefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientpython-perfbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::clientpython-perf-debuginfobefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::serverkernel-bootwrapperbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::serverkernel-debuginfo-common-ppc64before 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::serverkernel-debuginfo-common-s390xbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::serverkernel-kdumpbefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6
Red Hat:enterprise_linux:6::serverkernel-kdump-debuginfobefore 0:2.6.32-504.16.2.el60:2.6.32-504.16.2.el6

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

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Published before and after this one in the same product

  • ← EarlierCVE-2015-0274Mar 16, 2015 · The XFS implementation in the Linux kernel before 3.15 improperly uses an old size value during remote attribute replacement, which allows l
    28Monitor
  • ← EarlierCVE-2015-1420Mar 16, 2015 · Race condition in the handle_to_path function in fs/fhandle.c in the Linux kernel through 3.19.1 allows local users to bypass intended size
    7Monitor
  • Later →CVE-2015-1593Mar 16, 2015 · The stack randomization feature in the Linux kernel before 3.19.1 on 64-bit platforms uses incorrect data types for the results of bitwise l
    21Monitor

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:linux3.16.7-ckt4-3 · Debian:12Package registry (OSV)
debian:linux-2.62.6.32-48squeeze11 · Debian:6.0Package registry (OSV)
red hat:kernel0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-abi-whitelists0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug-debuginfo0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug-devel0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debuginfo0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debuginfo-common-x86_640:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-devel0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-doc0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-headers0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-tools0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-tools-debuginfo0:3.10.0-229.1.2.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
suse:kernel-default3.0.101-0.7.37.1 · SUSE:Linux Enterprise Server 11 SP2-LTSSPackage registry (OSV)
suse:kernel-ec23.0.101-0.7.37.1 · SUSE:Linux Enterprise Server 11 SP2-LTSSPackage registry (OSV)
suse:kernel-pae3.0.101-0.7.37.1 · SUSE:Linux Enterprise Server 11 SP2-LTSSPackage registry (OSV)
suse:kernel-source3.0.101-0.7.37.1 · SUSE:Linux Enterprise Server 11 SP2-LTSSPackage registry (OSV)
suse:kernel-syms3.0.101-0.7.37.1 · SUSE:Linux Enterprise Server 11 SP2-LTSSPackage registry (OSV)
suse:kernel-trace3.0.101-0.7.37.1 · SUSE:Linux Enterprise Server 11 SP2-LTSSPackage registry (OSV)
suse:kernel-xen3.0.101-0.7.37.1 · SUSE:Linux Enterprise Server 11 SP2-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12_Update_12-3.1 · SUSE:Linux Enterprise Live Patching 12Package registry (OSV)
suse:kgraft-patch-SLE12_Update_22-3.1 · SUSE:Linux Enterprise Live Patching 12Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
C · data can be read
Integrity
C · data or configuration can be modified
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
C
Integrity impact
C
Availability impact
C

Weakness class (CWE)

—

CVSS vector

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

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

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

All records