CVE-2024-56406

Name	CVE-2024-56406
Description	A heap buffer overflow vulnerability was discovered in Perl. Release branches 5.34, 5.36, 5.38 and 5.40 are affected, including development versions from 5.33.1 through 5.41.10. When there are non-ASCII bytes in the left-hand-side of the `tr` operator, `S_do_trans_invmap` can overflow the destination pointer `d`. $ perl -e '$_ = "\x{FF}" x 1000000; tr/\xFF/\x{100}/;' Segmentation fault (core dumped) It is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-5902-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
perl (PTS)	bullseye	5.32.1-4+deb11u3	fixed
	bullseye (security)	5.32.1-4+deb11u4	fixed
	bookworm	5.36.0-7+deb12u1	vulnerable
	bookworm (security)	5.36.0-7+deb12u2	fixed
	sid, trixie	5.40.1-3	fixed

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

Package	Type	Release	Fixed Version	Origin
perl	source	bullseye	(not affected)
perl	source	bookworm	5.36.0-7+deb12u2	DSA-5902-1
perl	source	(unstable)	5.40.1-3

Notes

[bullseye] - perl <not-affected> (Vulnerable code introduced later)
https://lists.security.metacpan.org/cve-announce/msg/28708725/
Introduced by: https://github.com/Perl/perl5/commit/a311ee08b6781f83a7785f578a26bbc21a7ae457 (v5.33.1)
Fixed by: https://github.com/Perl/perl5/commit/87f42aa0e0096e9a346c9672aa3a0bd3bef8c1dd