Debian Security Advisory

DLA-2474-1 musl -- LTS security update

Date Reported:
01 Dec 2020
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 975365.
In Mitre's CVE dictionary: CVE-2020-28928.
More information:

The wcsnrtombs function in all musl libc versions up through 1.2.1 has been found to have multiple bugs in handling of destination buffer size when limiting the input character count, which can lead to infinite loop with no forward progress (no overflow) or writing past the end of the destination buffers.

For Debian 9 stretch, this problem has been fixed in version 1.1.16-3+deb9u1.

We recommend that you upgrade your musl packages.

For the detailed security status of musl please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: