CVE catalog

CVE-2026-42497

Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory. _make_special_file() passes the tar header's linkname to link() without val

[CVE catalog]

Severity: High · CVSS 7.5
Published: May 26, 2026, 2:16:40 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.47% · Oct 23, 2026

Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory. _make_special_file() passes the tar header's linkname to link() without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode. A subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	perl	sid	`5.42.3-1`	fixed
Debian	perl	forky	`5.42.3-1`	fixed
Debian	perl	trixie	`5.40.1-6+deb13u1`	fixed
Debian	perl	bookworm	`5.36.0-7+deb12u3`	vulnerable
Debian	perl	bookworm-security	`5.36.0-7+deb12u4`	fixed
Cpe	perl	Not reported	Not reported	vulnerable
Cpe	\	Not reported	`3.08`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	perl	source	sid	`5.42.3-1`	not yet assigned	Not reported	[1138859]
Debian	perl	source	forky	`5.42.3-1`	not yet assigned	Not reported	[1138859]
Debian	perl	source	trixie	`5.40.1-6+deb13u1`	not yet assigned	Not reported	[1138859]
Debian	perl	source	bookworm	`5.36.0-7+deb12u4`	not yet assigned	Not reported	[1138859]
Cpe	\	cpe	Not reported	`3.08`	Not reported	Not reported	Not reported

[Debian bug #1138859]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libperl5.36]Affected
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[libperl-dev]Affected
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl]Affected
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl-base]Affected
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl-debug]Affected
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · amd64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · arm64 · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · amd64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · arm64 · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl-doc]Affected
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · all · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · all · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · all · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · all · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
[perl-modules-5.36]Affected
Source package: [perl]
Details (4)
- 5.36.0-7+deb12u3 · all · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u3 · all · bookworm
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · all · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12
- 5.36.0-7+deb12u2 · all · bookworm-security
  Affected · Fixed: 5.36.0-7+deb12u4
  nvd · perl · debian · bookworm; nvd · perl · debian · 12

[Debian 13 (Trixie)]

[libperl5.40]Affected
Source package: [perl]
Details (2)
- 5.40.1-6 · amd64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
[libperl-dev]Affected
Source package: [perl]
Details (2)
- 5.40.1-6 · amd64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
[perl]Affected
Details (2)
- 5.40.1-6 · amd64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
[perl-base]Affected
Source package: [perl]
Details (2)
- 5.40.1-6 · amd64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
[perl-debug]Affected
Source package: [perl]
Details (2)
- 5.40.1-6 · amd64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
- 5.40.1-6 · arm64 · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
[perl-doc]Affected
Source package: [perl]
Details (2)
- 5.40.1-6 · all · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
- 5.40.1-6 · all · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
[perl-modules-5.40]Affected
Source package: [perl]
Details (2)
- 5.40.1-6 · all · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13
- 5.40.1-6 · all · trixie
  Affected · Fixed: 5.40.1-6+deb13u1
  nvd · perl · debian · 13

Observed: Oct 23, 2026, 10:02:45 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]