CVE-2024-53984

Name	CVE-2024-53984
Description	Nanopb is a small code-size Protocol Buffers implementation. When the compile time option PB_ENABLE_MALLOC is enabled, the message contains at least one field with FT_POINTER field type, custom stream callback is used with unknown stream length. and the pb_decode_ex() function is used with flag PB_DECODE_DELIMITED, then the pb_decode_ex() function does not automatically call pb_release(), like is done for other failure cases. This could lead to memory leak and potential denial-of-service. This vulnerability is fixed in 0.4.9.1.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1088994

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
nanopb (PTS)	bullseye	0.4.4-2	vulnerable
	bookworm	0.4.7-2	vulnerable
	forky, sid, trixie	0.4.9.1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
nanopb	source	(unstable)	0.4.9.1-1			1088994

Notes

[bookworm] - nanopb <no-dsa> (Minor issue)
[bullseye] - nanopb <postponed> (Minor issue)
https://github.com/nanopb/nanopb/security/advisories/GHSA-xwqq-qxmw-hj5r
Fixed by: https://github.com/nanopb/nanopb/commit/2b86c255aa52250438d5aba124d0e86db495b378