DEBIAN-CVE-2026-53910
diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds. When processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. An attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment. This issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 NOTE: The project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.
DEBIAN-CVE-2026-53910
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-2026-53910
diffutils
Source reference: /affected/0/package/name
- Affected versions
- 1:3.10-1
Source reference:
/affected/0/versions1:3.10-2Source reference:
/affected/0/versions1:3.10-3Source reference:
/affected/0/versions1:3.10-4Source reference:
/affected/0/versions1:3.12-1Source reference:
/affected/0/versions1:3.8-4Source reference:
/affected/0/versions1:3.8-4+hurd.1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
diffutils
Source reference: /affected/1/package/name
- Affected versions
- 1:3.10-4
Source reference:
/affected/1/versions1:3.12-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
diffutils
Source reference: /affected/2/package/name
- Affected versions
- 1:3.10-4
Source reference:
/affected/2/versions1:3.12-1Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- 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": "diffutils",
"purl": "pkg:deb/debian/diffutils?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1:3.10-1",
"1:3.10-2",
"1:3.10-3",
"1:3.10-4",
"1:3.12-1",
"1:3.8-4",
"1:3.8-4+hurd.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53910.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "diffutils",
"purl": "pkg:deb/debian/diffutils?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1:3.10-4",
"1:3.12-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53910.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "diffutils",
"purl": "pkg:deb/debian/diffutils?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1:3.10-4",
"1:3.12-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53910.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57813 · Revision 1
- Added to Heist Feed
- Publisher date