CVE-2014-3484 — Multiple stack-based buffer overflows in the __dn_expand function in network/dn_expand.c in musl libc 1.1x before 1.1.2 and 0.9.13 through 1.0.3 allow remote attackers to (1) have unspecified impact via an invalid name length in a DNS response or (2) cause a denial of service (crash) via an invalid name length in a DNS response, related to an infinite loop with no output

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CRITICAL

Multiple stack-based buffer overflows in the __dn_expand function in network/dn_expand.c in musl libc 1.1x before 1.1.2 and 0.9.13 through 1.0.3 allow remote attackers to (1) have unspecified impact via an invalid name length in a DNS response or (2) cause a denial of service (crash) via an invalid name length in a DNS response, related to an infinite loop with no output

Published Feb 20, 2020

9.8

CRITICAL

CVSS 3.1

EPSS 2.20%

Description

Multiple stack-based buffer overflows in the __dn_expand function in network/dn_expand.c in musl libc 1.1x before 1.1.2 and 0.9.13 through 1.0.3 allow remote attackers to (1) have unspecified impact via an invalid name length in a DNS response or (2) cause a denial of service (crash) via an invalid name length in a DNS response, related to an infinite loop with no output.

Affected products

Vendor n/a Product Musl Libc Default
n/a
- Version
  0.9.13 through 1.0.3
  Status
  affected
  Constraints
  -
- Version
  1.1x before 1.1.2
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

Musl Libc

n/a

Version	Status	Constraints
0.9.13 through 1.0.3	affected	-
1.1x before 1.1.2	affected	-

Remediation

No remediation recorded yet.

Metrics

2.20% 0.02204

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.02204

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (14 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	2.20% (0.02204)	81.91th	v5 (v2026.06.15)
Jun 15, 2026	2.15% (0.02150)	79.68th	v5 (v2026.06.15)
Mar 30, 2025	1.79% (0.01794)	81.13th	v4 (v2025.03.14)
Mar 29, 2025	3.07% (0.03071)	77.80th	v4 (v2025.03.14)
Mar 17, 2025	1.79% (0.01794)	81.54th	v4 (v2025.03.14)
Dec 12, 2024	0.45% (0.00450)	75.91th	v3 (v2023.03.01)
Feb 8, 2024	0.45% (0.00450)	74.34th	v3 (v2023.03.01)
Oct 19, 2023	0.45% (0.00450)	72.22th	v3 (v2023.03.01)
May 8, 2023	0.32% (0.00317)	65.88th	v3 (v2023.03.01)
Mar 7, 2023	0.45% (0.00449)	71.08th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (1)

CWE-787

Out-of-bounds Write

References (2)

http://git.musl-libc.org/cgit/musl/commit/?id=b3d9e0b94ea73c68ef4169ec82c898ce59a4e30a
x_refsource_MISCPatch
http://seclists.org/oss-sec/2014/q2/495
x_refsource_MISCMailing ListPatchThird Party Advisory

Link	Providers	Tags
http://git.musl-libc.org/cgit/musl/commit/?id=b3d9e0b94ea73c68ef4169ec82c898ce59a4e30a		x_refsource_MISCPatch
http://seclists.org/oss-sec/2014/q2/495		x_refsource_MISCMailing ListPatchThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner redhat

Published Feb 20, 2020

Updated Aug 6, 2024

Reserved May 14, 2014

Link CVE-2014-3484

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2014-3484

Red Hat

Severity n/a

Public date n/a

Links CVE-2014-3484