Medium
7zip, p7zip — security advisory
7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain a heap out-of-bounds read in 7-Zip Ar handler BSD SYMDEF parser. A 4-byte heap out-of-bounds read exists in the Unix ar archive parser in 7-Zip. When parsing a BSD-style __.SYMDEF symbol table, the ParseLibSymbols function reads a 32-bit namesSize field via Get32 at a position that can equal the buffer size, reading 4 bytes past the end of the heap allocation. This reads uninitialized heap data under the default allocator. Version 26.01 patches the issue.
- Products
- 7zip, p7zip
- Affected versions
- 16.02+dfsg-4, 16.02+dfsg-5, 16.02+dfsg-6, 16.02+dfsg-7, 16.02+dfsg-7build1, 16.02+dfsg-8, 21.03~beta+dfsg-6, 21.04~beta+dfsg-1, 21.06+dfsg-1, 21.07+dfsg-1, 21.07+dfsg-2, 21.07+dfsg-3, 21.07+dfsg-4, 21.07+dfsg-4ubuntu0.1~esm1, 23.01+dfsg-11, 23.01+dfsg-11ubuntu0.1~esm1, 23.01+dfsg-3, 23.01+dfsg-7, 23.01+dfsg-8, 24.09+dfsg-7, 24.09+dfsg-8, 25.00+dfsg-1, 25.01+dfsg-1, 25.01+dfsg-2, 25.01+dfsg-3, 25.01+dfsg-4, 25.01+dfsg-5, 26.00+dfsg-1, 26.01+dfsg-2, 26.01+dfsg-3, 26.02+dfsg-1, 26.02+dfsg-2, 9.20.1~dfsg.1-4, 9.20.1~dfsg.1-4+deb7u1build0.14.04.1, 9.20.1~dfsg.1-4+deb7u2build0.14.04.1, 9.20.1~dfsg.1-4+deb7u3build0.14.04.1, 9.20.1~dfsg.1-4.2, 9.20.1~dfsg.1-4.2ubuntu0.1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-48112
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:07 UTC · Revision 1
Source evidence
7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain a heap out-of-bounds read in 7-Zip Ar handler BSD SYMDEF parser. A 4-byte heap out-of-bounds read exists in the Unix ar archive parser in 7-Zip. When parsing a BSD-style __.SYMDEF symbol table, the ParseLibSymbols function reads a 32-bit namesSize field via Get32 at a position that can equal the buffer size, reading 4 bytes past the end of the heap allocation. This reads uninitialized heap data under the default allocator. Version 26.01 patches the issue.
osv:UBUNTU-CVE-2026-48112
p7zip
Fixed versions: Not specified
p7zip
Fixed versions: Not specified
p7zip
Fixed versions: Not specified
p7zip
Fixed versions: Not specified
p7zip
Fixed versions: Not specified
7zip
Fixed versions: Not specified
7zip
Fixed versions: Not specified
7zip
Fixed versions: Not specified
7zip
Fixed versions: Not specified
7zip
Fixed versions: Not specified
Complete source record
{
"id": "17d5bf9543d98b12f7ffaeae4a8576d69577f7aa88f102a7e4f0d1f10c861ea7",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-48112",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-48112",
"summary": "7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain a heap out-of-bounds read in 7-Zip Ar handler BSD SYMDEF parser. A 4-byte heap out-of-bounds read exists in the Unix ar archive parser in 7-Zip. When parsing a BSD-style __.SYMDEF symbol table, the ParseLibSymbols function reads a 32-bit namesSize field via Get32 at a position that can equal the buffer size, reading 4 bytes past the end of the heap allocation. This reads uninitialized heap data under the default allocator. Version 26.01 patches the issue.",
"evidence": "osv:UBUNTU-CVE-2026-48112",
"products": [
{
"name": {
"value": "p7zip",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "9.20.1~dfsg.1-4",
"evidence": "/affected/0/versions"
},
{
"value": "9.20.1~dfsg.1-4+deb7u1build0.14.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "9.20.1~dfsg.1-4+deb7u2build0.14.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "9.20.1~dfsg.1-4+deb7u3build0.14.04.1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "p7zip",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "9.20.1~dfsg.1-4.2",
"evidence": "/affected/1/versions"
},
{
"value": "9.20.1~dfsg.1-4.2ubuntu0.1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "p7zip",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "16.02+dfsg-4",
"evidence": "/affected/2/versions"
},
{
"value": "16.02+dfsg-5",
"evidence": "/affected/2/versions"
},
{
"value": "16.02+dfsg-6",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "p7zip",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "16.02+dfsg-7",
"evidence": "/affected/3/versions"
},
{
"value": "16.02+dfsg-7build1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "p7zip",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "16.02+dfsg-8",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "7zip",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "21.03~beta+dfsg-6",
"evidence": "/affected/5/versions"
},
{
"value": "21.04~beta+dfsg-1",
"evidence": "/affected/5/versions"
},
{
"value": "21.06+dfsg-1",
"evidence": "/affected/5/versions"
},
{
"value": "21.07+dfsg-1",
"evidence": "/affected/5/versions"
},
{
"value": "21.07+dfsg-2",
"evidence": "/affected/5/versions"
},
{
"value": "21.07+dfsg-3",
"evidence": "/affected/5/versions"
},
{
"value": "21.07+dfsg-4",
"evidence": "/affected/5/versions"
},
{
"value": "21.07+dfsg-4ubuntu0.1~esm1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "7zip",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "23.01+dfsg-3",
"evidence": "/affected/6/versions"
},
{
"value": "23.01+dfsg-7",
"evidence": "/affected/6/versions"
},
{
"value": "23.01+dfsg-8",
"evidence": "/affected/6/versions"
},
{
"value": "23.01+dfsg-11",
"evidence": "/affected/6/versions"
},
{
"value": "23.01+dfsg-11ubuntu0.1~esm1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "7zip",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "24.09+dfsg-7",
"evidence": "/affected/7/versions"
},
{
"value": "24.09+dfsg-8",
"evidence": "/affected/7/versions"
},
{
"value": "25.00+dfsg-1",
"evidence": "/affected/7/versions"
},
{
"value": "25.01+dfsg-1",
"evidence": "/affected/7/versions"
},
{
"value": "25.01+dfsg-2",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "7zip",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "26.00+dfsg-1",
"evidence": "/affected/8/versions"
},
{
"value": "26.01+dfsg-2",
"evidence": "/affected/8/versions"
},
{
"value": "26.01+dfsg-3",
"evidence": "/affected/8/versions"
},
{
"value": "26.02+dfsg-1",
"evidence": "/affected/8/versions"
},
{
"value": "26.02+dfsg-2",
"evidence": "/affected/8/versions"
}
]
},
{
"name": {
"value": "7zip",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "25.01+dfsg-2",
"evidence": "/affected/9/versions"
},
{
"value": "25.01+dfsg-3",
"evidence": "/affected/9/versions"
},
{
"value": "25.01+dfsg-4",
"evidence": "/affected/9/versions"
},
{
"value": "25.01+dfsg-5",
"evidence": "/affected/9/versions"
},
{
"value": "26.00+dfsg-1",
"evidence": "/affected/9/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-48112",
"aliases": [
"UBUNTU-CVE-2026-48112"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "p7zip",
"purl": "pkg:deb/ubuntu/p7zip?arch=source&distro=trusty",
"ecosystem": "Ubuntu:14.04:LTS"
},
"versions": [
"9.20.1~dfsg.1-4",
"9.20.1~dfsg.1-4+deb7u1build0.14.04.1",
"9.20.1~dfsg.1-4+deb7u2build0.14.04.1",
"9.20.1~dfsg.1-4+deb7u3build0.14.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "p7zip",
"binary_version": "9.20.1~dfsg.1-4+deb7u3build0.14.04.1"
},
{
"binary_name": "p7zip-full",
"binary_version": "9.20.1~dfsg.1-4+deb7u3build0.14.04.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "p7zip",
"purl": "pkg:deb/ubuntu/p7zip?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"9.20.1~dfsg.1-4.2",
"9.20.1~dfsg.1-4.2ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "p7zip",
"binary_version": "9.20.1~dfsg.1-4.2ubuntu0.1"
},
{
"binary_name": "p7zip-full",
"binary_version": "9.20.1~dfsg.1-4.2ubuntu0.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "p7zip",
"purl": "pkg:deb/ubuntu/p7zip?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"16.02+dfsg-4",
"16.02+dfsg-5",
"16.02+dfsg-6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "p7zip",
"binary_version": "16.02+dfsg-6"
},
{
"binary_name": "p7zip-full",
"binary_version": "16.02+dfsg-6"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "p7zip",
"purl": "pkg:deb/ubuntu/p7zip?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"16.02+dfsg-7",
"16.02+dfsg-7build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "p7zip",
"binary_version": "16.02+dfsg-7build1"
},
{
"binary_name": "p7zip-full",
"binary_version": "16.02+dfsg-7build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "p7zip",
"purl": "pkg:deb/ubuntu/p7zip?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"16.02+dfsg-8"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "p7zip",
"binary_version": "16.02+dfsg-8"
},
{
"binary_name": "p7zip-full",
"binary_version": "16.02+dfsg-8"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "7zip",
"purl": "pkg:deb/ubuntu/7zip?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"21.03~beta+dfsg-6",
"21.04~beta+dfsg-1",
"21.06+dfsg-1",
"21.07+dfsg-1",
"21.07+dfsg-2",
"21.07+dfsg-3",
"21.07+dfsg-4",
"21.07+dfsg-4ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "7zip",
"binary_version": "21.07+dfsg-4ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "7zip",
"purl": "pkg:deb/ubuntu/7zip?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"23.01+dfsg-3",
"23.01+dfsg-7",
"23.01+dfsg-8",
"23.01+dfsg-11",
"23.01+dfsg-11ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "7zip",
"binary_version": "23.01+dfsg-11ubuntu0.1~esm1"
},
{
"binary_name": "7zip-standalone",
"binary_version": "23.01+dfsg-11ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "7zip",
"purl": "pkg:deb/ubuntu/7zip?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"24.09+dfsg-7",
"24.09+dfsg-8",
"25.00+dfsg-1",
"25.01+dfsg-1",
"25.01+dfsg-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "7zip",
"binary_version": "25.01+dfsg-2"
},
{
"binary_name": "7zip-standalone",
"binary_version": "25.01+dfsg-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "7zip",
"purl": "pkg:deb/ubuntu/7zip?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"26.00+dfsg-1",
"26.01+dfsg-2",
"26.01+dfsg-3",
"26.02+dfsg-1",
"26.02+dfsg-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "7zip",
"binary_version": "26.02+dfsg-2"
},
{
"binary_name": "7zip-standalone",
"binary_version": "26.02+dfsg-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "7zip",
"purl": "pkg:deb/ubuntu/7zip?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"25.01+dfsg-2",
"25.01+dfsg-3",
"25.01+dfsg-4",
"25.01+dfsg-5",
"26.00+dfsg-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "7zip",
"binary_version": "26.00+dfsg-1"
},
{
"binary_name": "7zip-standalone",
"binary_version": "26.00+dfsg-1"
}
]
}
}
],
"modified": "2026-10-17T13:00:22.715266944Z",
"provider": "osv",
"upstream": [
"CVE-2026-48112"
],
"references": [
"https://ubuntu.com/security/CVE-2026-48112",
"https://www.cve.org/CVERecord?id=CVE-2026-48112",
"https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/"
]
},
"related_cves": [
{
"value": "CVE-2026-48112",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360454,
"published_at": "2026-06-05T17:16:00+00:00"
}