DEBIAN-CVE-2026-66484
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-66484
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-66484.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-66484
- Upstream
- Published
- 2026-08-10T11:17:27Z
- Modified
- 2026-09-14T17:03:46Z
- Severity
-
- 4.6 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- Details
-
GNU cpio contains a Path Traversal vulnerability in its tar archive extraction functionality. When extracting a tar archive in copy-in mode with the --no-absolute-filenames option, the extracted file name is normalized but the tar hard-link target is passed to the link_to_name function without equivalent sanitization before calling link function. A tar archive provided by an attacker, containing a hard-link entry whose linkname is set to an absolute path outside the extraction directory, can cause cpio to create a hard link to an existing file outside the intended extraction directory, breaking the expected guarantee of --no-absolute-filenames and allowing archive-controlled linkage to external files. This issue has been fixed in commit e2b9cbdd3354d2b1569b7390d1bc15c1930559ad
- References
Affected packages
Debian:12 / cpio
Package
- Name
- cpio
- Purl
- pkg:deb/debian/cpio?arch=source&distro=bookworm
Debian:13 / cpio
Package
- Name
- cpio
- Purl
- pkg:deb/debian/cpio?arch=source&distro=trixie
Debian:14 / cpio
Package
- Name
- cpio
- Purl
- pkg:deb/debian/cpio?arch=source&distro=forky