DEBIAN-CVE-2026-12087
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-12087
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12087.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-12087
- Upstream
- Published
- 2026-06-15T22:16:16Z
- Modified
- 2026-09-12T10:00:15Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Socket versions before 2.041 for Perl have an out-of-bounds heap read. In Socket.xs, pack_ip_mreq_source() checks the length of its source argument before the argument is read, so the check tests the byte length carried over from the preceding multiaddr argument instead. Both addresses occupy a 4-byte field, so a valid multiaddr lets a source of any length pass the check, and the source is then copied into the 4-byte imr_sourceaddr field with a fixed-size copy. A source shorter than 4 bytes is not rejected, and the copy reads up to 3 bytes past the end of its buffer. Calling pack_ip_mreq_source() with a source value shorter than 4 bytes copies adjacent heap memory into the returned packed structure.
- References
Affected packages
Debian:12
libsocket-perl
Package
- Name
- libsocket-perl
- Purl
- pkg:deb/debian/libsocket-perl?arch=source&distro=bookworm
perl
Package
- Name
- perl
- Purl
- pkg:deb/debian/perl?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
5.*
5.36.0-7
5.36.0-7+deb12u1
5.36.0-7+deb12u2
5.36.0-7+deb12u3
5.36.0-8
5.36.0-9
5.36.0-10
5.38.0~rc2-1
5.38.0-1
5.38.0-2
5.38.2-1
5.38.2-2
5.38.2-3
5.38.2-3.1
5.38.2-3.2
5.38.2-3.2+hurd.1
5.38.2-4
5.38.2-5
5.40.0~rc1-1
5.40.0-1
5.40.0-2
5.40.0-3
5.40.0-4
5.40.0-5
5.40.0-6
5.40.0-7
5.40.0-8
5.40.1-1
5.40.1-2
5.40.1-3
5.40.1-4
5.40.1-5
5.40.1-6
5.40.1-7
5.40.1-8
5.42.0-1
5.42.0-2
5.42.0-3
5.42.2-1
5.42.2-2
5.42.2-3
5.42.3-1
5.44.0-1
Debian:13
libsocket-perl
Package
- Name
- libsocket-perl
- Purl
- pkg:deb/debian/libsocket-perl?arch=source&distro=trixie
perl
Package
- Name
- perl
- Purl
- pkg:deb/debian/perl?arch=source&distro=trixie
Debian:14
libsocket-perl
Package
- Name
- libsocket-perl
- Purl
- pkg:deb/debian/libsocket-perl?arch=source&distro=forky
perl
Package
- Name
- perl
- Purl
- pkg:deb/debian/perl?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed5.42.3-1