DEBIAN-CVE-2025-66038
- Source
- https://security-tracker.debian.org/tracker/CVE-2025-66038
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-66038.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2025-66038
- Upstream
- Published
- 2026-03-30T18:16:18Z
- Modified
- 2026-09-01T16:06:20Z
- Severity
-
- 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, sc_compacttlv_find_tag searches a compact-TLV buffer for a given tag. In compact-TLV, a single byte encodes the tag (high nibble) and value length (low nibble). With a 1-byte buffer {0x0A}, the encoded element claims tag=0 and length=10 but no value bytes follow. Calling sc_compacttlv_find_tag with search tag 0x00 returns a pointer equal to buf+1 and outlen=10 without verifying that the claimed value length fits within the remaining buffer. In cases where the sc_compacttlv_find_tag is provided untrusted data (such as being read from cards/files), attackers may be able to influence it to return out-of-bounds pointers leading to downstream memory corruption when subsequent code tries to dereference the pointer. This issue has been patched in version 0.27.0.
- References
Affected packages
Debian:12 / opensc
Package
- Name
- opensc
- Purl
- pkg:deb/debian/opensc?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / opensc
Package
- Name
- opensc
- Purl
- pkg:deb/debian/opensc?arch=source&distro=trixie
Debian:14 / opensc
Package
- Name
- opensc
- Purl
- pkg:deb/debian/opensc?arch=source&distro=forky