DEBIAN-CVE-2026-39856
osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.13, an out-of-bounds read vulnerability exists in osslsigncode version 2.12 and earlier in the PE page-hash computation code (pe_page_hash_calc()). When processing PE sections for page hashing, the function uses PointerToRawData and SizeOfRawData values from section headers without validating that the referenced region lies within the mapped file. An attacker can craft a PE file with section headers that point beyond the end of the file. When osslsigncode computes page hashes for such a file, it may attempt to hash data from an invalid memory region, causing an out-of-bounds read and potentially crashing the process. The vulnerability can be triggered while signing a malicious PE file with page hashing enabled (-ph), or while verifying a malicious signed PE file that already contains page hashes. Verification of an already signed file does not require the verifier to pass -ph. This vulnerability is fixed in 2.13.
DEBIAN-CVE-2026-39856
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-39856
osslsigncode
Source reference: /affected/0/package/name
- Affected versions
- 2.10-1
Source reference:
/affected/0/versions2.11-1Source reference:
/affected/0/versions2.12-1Source reference:
/affected/0/versions2.13-1Source reference:
/affected/0/versions2.13-2Source reference:
/affected/0/versions2.14-1Source reference:
/affected/0/versions2.5-4Source reference:
/affected/0/versions2.8-1Source reference:
/affected/0/versions2.8-2Source reference:
/affected/0/versions2.9-1Source reference:
/affected/0/versions2.9-1~bpo12+1Source reference:
/affected/0/versions2.9-2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
osslsigncode
Source reference: /affected/1/package/name
- Affected versions
- 2.10-1
Source reference:
/affected/1/versions2.11-1Source reference:
/affected/1/versions2.12-1Source reference:
/affected/1/versions2.13-1Source reference:
/affected/1/versions2.13-2Source reference:
/affected/1/versions2.14-1Source reference:
/affected/1/versions2.9-2Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
osslsigncode
Source reference: /affected/2/package/name
- Affected versions
- 2.10-1
Source reference:
/affected/2/versions2.11-1Source reference:
/affected/2/versions2.12-1Source reference:
/affected/2/versions2.9-2Source reference:
/affected/2/versions - Fixed versions
- 2.13-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "osslsigncode",
"purl": "pkg:deb/debian/osslsigncode?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.10-1",
"2.11-1",
"2.12-1",
"2.13-1",
"2.13-2",
"2.14-1",
"2.5-4",
"2.8-1",
"2.8-2",
"2.9-1",
"2.9-1~bpo12+1",
"2.9-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39856.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "osslsigncode",
"purl": "pkg:deb/debian/osslsigncode?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.10-1",
"2.11-1",
"2.12-1",
"2.13-1",
"2.13-2",
"2.14-1",
"2.9-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39856.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.13-1"
}
]
}
],
"package": {
"name": "osslsigncode",
"purl": "pkg:deb/debian/osslsigncode?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.10-1",
"2.11-1",
"2.12-1",
"2.9-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39856.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57586 · Revision 1
- Added to Heist Feed
- Publisher date