ubuntu-cve-2025-68973
Vulnerability from osv_ubuntu
Published
2025-12-28 17:16
Modified
2026-01-20 05:34
Summary
Details
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
Severity
7.8 (High)
7.0 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gnupg",
"binary_version": "1.4.16-1ubuntu2.6+esm2"
},
{
"binary_name": "gnupg-curl",
"binary_version": "1.4.16-1ubuntu2.6+esm2"
},
{
"binary_name": "gpgv",
"binary_version": "1.4.16-1ubuntu2.6+esm2"
}
],
"priority_reason": "OOB write"
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "gnupg",
"purl": "pkg:deb/ubuntu/gnupg@1.4.16-1ubuntu2.6+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.16-1ubuntu2.6+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4.14-1ubuntu2",
"1.4.15-1.1ubuntu1",
"1.4.15-1.1ubuntu2",
"1.4.15-2ubuntu1",
"1.4.16-1ubuntu1",
"1.4.16-1ubuntu2",
"1.4.16-1ubuntu2.1",
"1.4.16-1ubuntu2.3",
"1.4.16-1ubuntu2.4",
"1.4.16-1ubuntu2.5",
"1.4.16-1ubuntu2.6",
"1.4.16-1ubuntu2.6+esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gnupg",
"binary_version": "1.4.20-1ubuntu3.3+esm3"
},
{
"binary_name": "gnupg-curl",
"binary_version": "1.4.20-1ubuntu3.3+esm3"
},
{
"binary_name": "gpgv",
"binary_version": "1.4.20-1ubuntu3.3+esm3"
}
],
"priority_reason": "OOB write"
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "gnupg",
"purl": "pkg:deb/ubuntu/gnupg@1.4.20-1ubuntu3.3+esm3?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.20-1ubuntu3.3+esm3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4.18-7ubuntu1",
"1.4.19-6ubuntu1",
"1.4.20-1ubuntu1",
"1.4.20-1ubuntu2",
"1.4.20-1ubuntu3",
"1.4.20-1ubuntu3.1",
"1.4.20-1ubuntu3.2",
"1.4.20-1ubuntu3.3",
"1.4.20-1ubuntu3.3+esm2"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "dirmngr",
"binary_version": "2.1.11-6ubuntu2.1+esm3"
},
{
"binary_name": "gnupg-agent",
"binary_version": "2.1.11-6ubuntu2.1+esm3"
},
{
"binary_name": "gnupg2",
"binary_version": "2.1.11-6ubuntu2.1+esm3"
},
{
"binary_name": "gpgsm",
"binary_version": "2.1.11-6ubuntu2.1+esm3"
},
{
"binary_name": "gpgv2",
"binary_version": "2.1.11-6ubuntu2.1+esm3"
},
{
"binary_name": "scdaemon",
"binary_version": "2.1.11-6ubuntu2.1+esm3"
}
],
"priority_reason": "OOB write"
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "gnupg2",
"purl": "pkg:deb/ubuntu/gnupg2@2.1.11-6ubuntu2.1+esm3?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.11-6ubuntu2.1+esm3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.28-3ubuntu1",
"2.0.28-3ubuntu2",
"2.1.11-6ubuntu1",
"2.1.11-6ubuntu2",
"2.1.11-6ubuntu2.1",
"2.1.11-6ubuntu2.1+esm1",
"2.1.11-6ubuntu2.1+esm2"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "dirmngr",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gnupg",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gnupg-agent",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gnupg-l10n",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gnupg-utils",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gnupg2",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpg",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpg-agent",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpg-wks-client",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpg-wks-server",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpgconf",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpgsm",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpgv",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpgv-static",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpgv-win32",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "gpgv2",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
},
{
"binary_name": "scdaemon",
"binary_version": "2.2.4-1ubuntu1.6+esm2"
}
],
"priority_reason": "OOB write"
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "gnupg2",
"purl": "pkg:deb/ubuntu/gnupg2@2.2.4-1ubuntu1.6+esm2?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.4-1ubuntu1.6+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.15-1ubuntu8",
"2.2.4-1ubuntu1",
"2.2.4-1ubuntu1.1",
"2.2.4-1ubuntu1.2",
"2.2.4-1ubuntu1.3",
"2.2.4-1ubuntu1.4",
"2.2.4-1ubuntu1.5",
"2.2.4-1ubuntu1.6",
"2.2.4-1ubuntu1.6+esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "dirmngr",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gnupg",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gnupg-agent",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gnupg-l10n",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gnupg-utils",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gnupg2",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpg",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpg-agent",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpg-wks-client",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpg-wks-server",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpgconf",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpgsm",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpgv",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpgv-static",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpgv-win32",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "gpgv2",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
},
{
"binary_name": "scdaemon",
"binary_version": "2.2.19-3ubuntu2.5+esm1"
}
],
"priority_reason": "OOB write"
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "gnupg2",
"purl": "pkg:deb/ubuntu/gnupg2@2.2.19-3ubuntu2.5+esm1?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.19-3ubuntu2.5+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.2.12-1ubuntu3",
"2.2.17-3ubuntu1",
"2.2.19-3ubuntu2",
"2.2.19-3ubuntu2.1",
"2.2.19-3ubuntu2.2",
"2.2.19-3ubuntu2.4",
"2.2.19-3ubuntu2.5"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "dirmngr",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gnupg",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gnupg-agent",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gnupg-l10n",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gnupg-utils",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gnupg2",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpg",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpg-agent",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpg-wks-client",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpg-wks-server",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpgconf",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpgsm",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpgv",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpgv-static",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpgv-win32",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "gpgv2",
"binary_version": "2.2.27-3ubuntu2.5"
},
{
"binary_name": "scdaemon",
"binary_version": "2.2.27-3ubuntu2.5"
}
],
"priority_reason": "OOB write"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "gnupg2",
"purl": "pkg:deb/ubuntu/gnupg2@2.2.27-3ubuntu2.5?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.27-3ubuntu2.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.2.20-1ubuntu4",
"2.2.27-2ubuntu1",
"2.2.27-3ubuntu1",
"2.2.27-3ubuntu2",
"2.2.27-3ubuntu2.1",
"2.2.27-3ubuntu2.3",
"2.2.27-3ubuntu2.4"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "dirmngr",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gnupg",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gnupg-agent",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gnupg-l10n",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gnupg-utils",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gnupg2",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpg",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpg-agent",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpg-wks-client",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpg-wks-server",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpgconf",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpgsm",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpgv",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpgv-static",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "gpgv-win32",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "keyboxd",
"binary_version": "2.4.4-2ubuntu17.4"
},
{
"binary_name": "scdaemon",
"binary_version": "2.4.4-2ubuntu17.4"
}
],
"priority_reason": "OOB write"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "gnupg2",
"purl": "pkg:deb/ubuntu/gnupg2@2.4.4-2ubuntu17.4?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.4-2ubuntu17.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.2.40-1.1ubuntu1",
"2.4.4-2ubuntu7",
"2.4.4-2ubuntu15",
"2.4.4-2ubuntu16",
"2.4.4-2ubuntu17",
"2.4.4-2ubuntu17.2",
"2.4.4-2ubuntu17.3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "dirmngr",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gnupg",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gnupg-agent",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gnupg-l10n",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gnupg-utils",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gnupg2",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gpg",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gpg-agent",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gpg-wks-client",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gpg-wks-server",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gpgconf",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gpgsm",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gpgv",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "gpgv-static",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "scdaemon",
"binary_version": "2.4.8-2ubuntu2.1"
},
{
"binary_name": "tpm2daemon",
"binary_version": "2.4.8-2ubuntu2.1"
}
],
"priority_reason": "OOB write"
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "gnupg2",
"purl": "pkg:deb/ubuntu/gnupg2@2.4.8-2ubuntu2.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.8-2ubuntu2.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.4.4-2ubuntu23",
"2.4.4-2ubuntu24",
"2.4.7-17ubuntu3",
"2.4.8-2ubuntu1",
"2.4.8-2ubuntu2"
]
}
],
"aliases": [],
"details": "In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)",
"id": "UBUNTU-CVE-2025-68973",
"modified": "2026-01-20T05:34:29Z",
"published": "2025-12-28T17:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-68973"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68973"
},
{
"type": "REPORT",
"url": "https://gpg.fail/memcpy"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2025/12/28/5"
},
{
"type": "REPORT",
"url": "https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9"
},
{
"type": "REPORT",
"url": "https://github.com/gpg/gnupg/commit/4ecc5122f20e10c17172ed72f4fa46c784b5fb48"
},
{
"type": "REPORT",
"url": "https://github.com/gpg/gnupg/commit/1e929abd20fa2e4be3797a137caca63a971d5372"
},
{
"type": "REPORT",
"url": "https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306"
},
{
"type": "REPORT",
"url": "https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9"
},
{
"type": "REPORT",
"url": "https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51"
},
{
"type": "REPORT",
"url": "https://news.ycombinator.com/item?id=46403200"
},
{
"type": "REPORT",
"url": "http://www.openwall.com/lists/oss-security/2025/12/29/11"
},
{
"type": "REPORT",
"url": "https://dev.gnupg.org/T7906"
},
{
"type": "REPORT",
"url": "https://dev.gnupg.org/T8001"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7946-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7946-2"
}
],
"related": [
"USN-7946-1",
"USN-7946-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-68973"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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