DEBIAN-CVE-2026-26740
Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.
DEBIAN-CVE-2026-26740
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-2026-26740
giflib
Source reference: /affected/0/package/name
- Affected versions
- 5.2.1-2.5
Source reference:
/affected/0/versions - Fixed versions
- 5.2.1-2.5+deb12u1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
giflib
Source reference: /affected/1/package/name
- Affected versions
- 5.2.2-1
Source reference:
/affected/1/versions - Fixed versions
- 5.2.2-1+deb13u1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
giflib
Source reference: /affected/2/package/name
- Affected versions
- 5.2.2-1
Source reference:
/affected/2/versions - Fixed versions
- 6.1.3-1
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"
},
{
"fixed": "5.2.1-2.5+deb12u1"
}
]
}
],
"package": {
"name": "giflib",
"purl": "pkg:deb/debian/giflib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"5.2.1-2.5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26740.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.2.2-1+deb13u1"
}
]
}
],
"package": {
"name": "giflib",
"purl": "pkg:deb/debian/giflib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"5.2.2-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26740.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.1.3-1"
}
]
}
],
"package": {
"name": "giflib",
"purl": "pkg:deb/debian/giflib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"5.2.2-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26740.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56295 · Revision 1
- Added to Heist Feed
- Publisher date