CVE-2026-41564

Name
CVE-2026-41564
Description
CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking. The Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery. This affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
9b29abf9-4ab0-4765-b253-1875cd9b441e https://github.com/DCIT/perl-CryptX/commit/9a1dd3e0c27d68e32450be5538b864c2b115ee15.patch
9b29abf9-4ab0-4765-b253-1875cd9b441e https://github.com/DCIT/perl-CryptX/security/advisories/GHSA-24c2-gp6c-24c6
9b29abf9-4ab0-4765-b253-1875cd9b441e https://metacpan.org/release/MIK/CryptX-0.088
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2026/04/23/2

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:dcit:cryptx:*:*:*:*:*:perl:*:* perl-cryptx >= None < 0.088

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
perl-cryptx edge-main 0.088-r0 Timothy Legge <timlegge@gmail.com> fixed
perl-cryptx edge-main 0.087-r1 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx edge-main 0.087-r0 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx edge-main 0.084-r0 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx edge-main 0.079-r0 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx 3.23-main 0.088-r0 Timothy Legge <timlegge@gmail.com> fixed
perl-cryptx 3.23-main 0.087-r1 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx 3.22-main 0.088-r0 Timothy Legge <timlegge@gmail.com> fixed
perl-cryptx 3.22-main 0.084-r0 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx 3.22-main 0.079-r0 None possibly vulnerable
perl-cryptx 3.21-main 0.088-r0 Timothy Legge <timlegge@gmail.com> fixed
perl-cryptx 3.21-main 0.084-r0 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx 3.21-main 0.079-r0 None possibly vulnerable
perl-cryptx 3.20-main 0.088-r0 Timothy Legge <timlegge@gmail.com> fixed
perl-cryptx 3.20-main 0.080-r0 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx 3.20-main 0.079-r0 None possibly vulnerable
perl-cryptx 3.19-main 0.080-r0 Timothy Legge <timlegge@gmail.com> possibly vulnerable
perl-cryptx 3.19-main 0.079-r0 None possibly vulnerable