CVE catalog

CVE-2020-28928

musl: CVE-2020-28928

Severity: Medium
Published: Nov 24, 2020, 6:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.65% · Oct 25, 2026

In musl libc through 1.2.1, wcsnrtombs mishandles particular combinations of destination buffer size and source character limit, as demonstrated by an invalid write access (buffer overflow).

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	musl	sid	`1.2.6-1`	fixed
Debian	musl	forky	`1.2.6-1`	fixed
Debian	musl	trixie	`1.2.5-3.1~deb13u1`	fixed
Debian	musl	bookworm	`1.2.3-1`	fixed
Alpine	musl	3.10	`1.1.22-r4`	fixed
Alpine	musl	3.11	`1.1.24-r3`	fixed
Alpine	musl	3.12	`1.1.24-r10`	fixed
Alpine	musl	3.13	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.14	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.15	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.16	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.17	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.18	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.19	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.20	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.21	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.22	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.23	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.24	`1.2.2_pre2-r0`	fixed
Alpine	musl	3.9	`1.1.20-r6`	fixed
Ubuntu	musl	pro	`1.1.23-2build1`	vulnerable
Ubuntu	musl	pro	`1.1.24-1`	vulnerable
Ubuntu	musl	pro	`1.1.24-1ubuntu0.1~esm1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	musl	source	sid	`1.2.2-1`	not yet assigned	Not reported	[975365]
Debian	musl	source	forky	`1.2.2-1`	not yet assigned	Not reported	[975365]
Debian	musl	source	trixie	`1.2.2-1`	not yet assigned	Not reported	[975365]
Debian	musl	source	bookworm	`1.2.2-1`	not yet assigned	Not reported	[975365]
Alpine	musl	apk	3.10	`1.1.22-r4`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.11	`1.1.24-r3`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.12	`1.1.24-r10`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.13	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.14	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.15	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.16	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.17	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.18	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.19	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.20	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.21	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.22	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.23	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.24	`1.2.2_pre2-r0`	Not reported	ALPINE-CVE-2020-28928	Not reported
Alpine	musl	apk	3.9	`1.1.20-r6`	Not reported	ALPINE-CVE-2020-28928	Not reported
Ubuntu	musl	deb	pro	`1.1.24-1ubuntu0.1~esm1`	Not reported	UBUNTU-CVE-2020-28928	Not reported

[Debian bug #975365]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[musl]Fixed
Details (2)
- 1.2.3-1 · amd64 · bookworm
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · bookworm; dsa · musl · debian · 12
- 1.2.3-1 · arm64 · bookworm
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · bookworm; dsa · musl · debian · 12
[musl-dev]Fixed
Source package: [musl]
Details (2)
- 1.2.3-1 · amd64 · bookworm
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · bookworm; dsa · musl · debian · 12
- 1.2.3-1 · arm64 · bookworm
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · bookworm; dsa · musl · debian · 12
[musl-tools]Fixed
Source package: [musl]
Details (2)
- 1.2.3-1 · amd64 · bookworm
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · bookworm; dsa · musl · debian · 12
- 1.2.3-1 · arm64 · bookworm
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · bookworm; dsa · musl · debian · 12

[Debian 13 (Trixie)]

[musl]Fixed
Details (2)
- 1.2.5-3.1~deb13u1 · amd64 · trixie
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · 13
- 1.2.5-3.1~deb13u1 · arm64 · trixie
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · 13
[musl-dev]Fixed
Source package: [musl]
Details (2)
- 1.2.5-3.1~deb13u1 · amd64 · trixie
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · 13
- 1.2.5-3.1~deb13u1 · arm64 · trixie
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · 13
[musl-tools]Fixed
Source package: [musl]
Details (2)
- 1.2.5-3.1~deb13u1 · amd64 · trixie
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · 13
- 1.2.5-3.1~deb13u1 · arm64 · trixie
  Fixed · Fixed: 1.2.2-1
  dsa · musl · debian · 13

Observed: Oct 23, 2026, 5:51:12 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]