CriticalFix available
klibc, rsync and 2 more products — security advisory
The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.
- Products
- klibc, rsync, zlib, zsync
- Affected versions
- 0.6.2-1ubuntu1, 0.6.2-2ubuntu1, 0.6.2-3ubuntu1, 0.6.2-5, 0.6.2-5build1, 0.6.2-7ubuntu1, 0.6.2-8, 0.6.2-9, 0.6.3-2, 1:1.2.8.dfsg-1ubuntu1, 1:1.2.8.dfsg-1ubuntu1.1, 1:1.2.8.dfsg-1ubuntu1.1+esm1, 1:1.2.8.dfsg-1ubuntu1.1+esm2, 1:1.2.8.dfsg-1ubuntu1.1+esm3, 1:1.2.8.dfsg-2ubuntu4, 1:1.2.8.dfsg-2ubuntu4.1, 2.0.1-3.1ubuntu2, 2.0.10-3, 2.0.10-4, 2.0.10-4ubuntu0.1, 2.0.13-1, 2.0.13-2, 2.0.13-2ubuntu1, 2.0.13-4, 2.0.13-4ubuntu0.1, 2.0.13-4ubuntu1, 2.0.14-1ubuntu1, 2.0.2-1ubuntu1, 2.0.2-1ubuntu2, 2.0.3-0ubuntu1, 2.0.3-0ubuntu1.14.04.1, 2.0.3-0ubuntu1.14.04.2, 2.0.3-0ubuntu1.14.04.3, 2.0.3-0ubuntu1.14.04.3+esm2, 2.0.3-0ubuntu1.14.04.3+esm3, 2.0.4-4, 2.0.4-6, 2.0.4-7, 2.0.4-8, 2.0.4-8ubuntu1, 2.0.4-8ubuntu1.16.04.1, 2.0.4-8ubuntu1.16.04.2, 2.0.4-8ubuntu1.16.04.3, 2.0.4-8ubuntu1.16.04.4, 2.0.4-8ubuntu1.16.04.4+esm1, 2.0.4-8ubuntu1.16.04.4+esm2, 2.0.4-9ubuntu1, 2.0.4-9ubuntu2, 2.0.4-9ubuntu2.1, 2.0.4-9ubuntu2.2, 2.0.4-9ubuntu2.2+esm1, 2.0.6-1ubuntu1, 2.0.6-1ubuntu2, 2.0.7-1ubuntu1, 2.0.7-1ubuntu3, 2.0.7-1ubuntu4, 2.0.7-1ubuntu5, 2.0.7-1ubuntu5.1, 2.0.7-1ubuntu5.2, 2.0.8-6.1ubuntu2, 3.1.1-3, 3.1.1-3ubuntu1, 3.1.1-3ubuntu1.1, 3.1.1-3ubuntu1.2, 3.1.2-2, 3.1.2-2.1, 3.1.2-2.1ubuntu1
- Fixed versions
- 1:1.2.8.dfsg-2ubuntu4.3, 2.0.10-4ubuntu0.2, 2.0.13-4ubuntu0.2, 2.0.14-1ubuntu1.1, 2.0.14-1ubuntu2, 2.0.3-0ubuntu1.14.04.3+esm4, 2.0.4-8ubuntu1.16.04.4+esm3, 2.0.4-9ubuntu2.2+esm2, 2.0.7-1ubuntu5.2+esm1, 3.1.1-3ubuntu1.3, 3.1.2-2.1ubuntu1.1, 3.1.3-6
- CVEs
- CVE-2016-9843
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:21 UTC · Revision 1
Source evidence
The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.
osv:UBUNTU-CVE-2016-9843
klibc
Fixed versions: 2.0.3-0ubuntu1.14.04.3+esm4
zlib
Fixed versions: Not specified
rsync
Fixed versions: 3.1.1-3ubuntu1.3
zlib
Fixed versions: 1:1.2.8.dfsg-2ubuntu4.3
klibc
Fixed versions: 2.0.4-8ubuntu1.16.04.4+esm3
zsync
Fixed versions: Not specified
rsync
Fixed versions: 3.1.2-2.1ubuntu1.1
klibc
Fixed versions: 2.0.4-9ubuntu2.2+esm2
zsync
Fixed versions: Not specified
rsync
Fixed versions: 3.1.3-6
klibc
Fixed versions: 2.0.7-1ubuntu5.2+esm1
zsync
Fixed versions: Not specified
klibc
Fixed versions: 2.0.10-4ubuntu0.2
zsync
Fixed versions: Not specified
klibc
Fixed versions: 2.0.13-4ubuntu0.2
zsync
Fixed versions: Not specified
klibc
Fixed versions: 2.0.14-1ubuntu1.1
zsync
Fixed versions: Not specified
klibc
Fixed versions: 2.0.14-1ubuntu2
zsync
Fixed versions: Not specified
klibc
Fixed versions: 2.0.14-1ubuntu2
zsync
Fixed versions: Not specified
Complete source record
{
"id": "df228dff5b22437ef8a8afdbfe19529409a34e14037ec00ac6180fc1476692c9",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2016-9843",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2016-9843",
"summary": "The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.",
"evidence": "osv:UBUNTU-CVE-2016-9843",
"products": [
{
"name": {
"value": "klibc",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.3-0ubuntu1.14.04.3+esm4",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "2.0.1-3.1ubuntu2",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.2-1ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.2-1ubuntu2",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.3-0ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.3-0ubuntu1.14.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.3-0ubuntu1.14.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.3-0ubuntu1.14.04.3",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.3-0ubuntu1.14.04.3+esm2",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.3-0ubuntu1.14.04.3+esm3",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "zlib",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.2.8.dfsg-1ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.2.8.dfsg-1ubuntu1.1",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.2.8.dfsg-1ubuntu1.1+esm1",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.2.8.dfsg-1ubuntu1.1+esm2",
"evidence": "/affected/1/versions"
},
{
"value": "1:1.2.8.dfsg-1ubuntu1.1+esm3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "rsync",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.1-3ubuntu1.3",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "3.1.1-3",
"evidence": "/affected/2/versions"
},
{
"value": "3.1.1-3ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "3.1.1-3ubuntu1.1",
"evidence": "/affected/2/versions"
},
{
"value": "3.1.1-3ubuntu1.2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "zlib",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.2.8.dfsg-2ubuntu4.3",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "1:1.2.8.dfsg-2ubuntu4",
"evidence": "/affected/3/versions"
},
{
"value": "1:1.2.8.dfsg-2ubuntu4.1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "klibc",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.4-8ubuntu1.16.04.4+esm3",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": [
{
"value": "2.0.3-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-4",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-6",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-7",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-8",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-8ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-8ubuntu1.16.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-8ubuntu1.16.04.2",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-8ubuntu1.16.04.3",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-8ubuntu1.16.04.4",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-8ubuntu1.16.04.4+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.4-8ubuntu1.16.04.4+esm2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "zsync",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.6.2-1ubuntu1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "rsync",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.2-2.1ubuntu1.1",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": [
{
"value": "3.1.2-2",
"evidence": "/affected/6/versions"
},
{
"value": "3.1.2-2.1",
"evidence": "/affected/6/versions"
},
{
"value": "3.1.2-2.1ubuntu1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "klibc",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.4-9ubuntu2.2+esm2",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": [
{
"value": "2.0.4-9ubuntu1",
"evidence": "/affected/7/versions"
},
{
"value": "2.0.4-9ubuntu2",
"evidence": "/affected/7/versions"
},
{
"value": "2.0.4-9ubuntu2.1",
"evidence": "/affected/7/versions"
},
{
"value": "2.0.4-9ubuntu2.2",
"evidence": "/affected/7/versions"
},
{
"value": "2.0.4-9ubuntu2.2+esm1",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "zsync",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.6.2-2ubuntu1",
"evidence": "/affected/8/versions"
},
{
"value": "0.6.2-3ubuntu1",
"evidence": "/affected/8/versions"
}
]
},
{
"name": {
"value": "rsync",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.3-6",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "klibc",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.7-1ubuntu5.2+esm1",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": [
{
"value": "2.0.6-1ubuntu1",
"evidence": "/affected/10/versions"
},
{
"value": "2.0.6-1ubuntu2",
"evidence": "/affected/10/versions"
},
{
"value": "2.0.7-1ubuntu1",
"evidence": "/affected/10/versions"
},
{
"value": "2.0.7-1ubuntu3",
"evidence": "/affected/10/versions"
},
{
"value": "2.0.7-1ubuntu4",
"evidence": "/affected/10/versions"
},
{
"value": "2.0.7-1ubuntu5",
"evidence": "/affected/10/versions"
},
{
"value": "2.0.7-1ubuntu5.1",
"evidence": "/affected/10/versions"
},
{
"value": "2.0.7-1ubuntu5.2",
"evidence": "/affected/10/versions"
}
]
},
{
"name": {
"value": "zsync",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.6.2-3ubuntu1",
"evidence": "/affected/11/versions"
}
]
},
{
"name": {
"value": "klibc",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.10-4ubuntu0.2",
"evidence": "/affected/12/ranges"
}
],
"affected_versions": [
{
"value": "2.0.8-6.1ubuntu2",
"evidence": "/affected/12/versions"
},
{
"value": "2.0.10-3",
"evidence": "/affected/12/versions"
},
{
"value": "2.0.10-4",
"evidence": "/affected/12/versions"
},
{
"value": "2.0.10-4ubuntu0.1",
"evidence": "/affected/12/versions"
}
]
},
{
"name": {
"value": "zsync",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.6.2-3ubuntu1",
"evidence": "/affected/13/versions"
}
]
},
{
"name": {
"value": "klibc",
"evidence": "/affected/14/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.13-4ubuntu0.2",
"evidence": "/affected/14/ranges"
}
],
"affected_versions": [
{
"value": "2.0.13-1",
"evidence": "/affected/14/versions"
},
{
"value": "2.0.13-2",
"evidence": "/affected/14/versions"
},
{
"value": "2.0.13-2ubuntu1",
"evidence": "/affected/14/versions"
},
{
"value": "2.0.13-4",
"evidence": "/affected/14/versions"
},
{
"value": "2.0.13-4ubuntu0.1",
"evidence": "/affected/14/versions"
}
]
},
{
"name": {
"value": "zsync",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.6.2-5",
"evidence": "/affected/15/versions"
},
{
"value": "0.6.2-5build1",
"evidence": "/affected/15/versions"
}
]
},
{
"name": {
"value": "klibc",
"evidence": "/affected/16/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.14-1ubuntu1.1",
"evidence": "/affected/16/ranges"
}
],
"affected_versions": [
{
"value": "2.0.13-4ubuntu1",
"evidence": "/affected/16/versions"
},
{
"value": "2.0.14-1ubuntu1",
"evidence": "/affected/16/versions"
}
]
},
{
"name": {
"value": "zsync",
"evidence": "/affected/17/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.6.2-7ubuntu1",
"evidence": "/affected/17/versions"
},
{
"value": "0.6.2-8",
"evidence": "/affected/17/versions"
}
]
},
{
"name": {
"value": "klibc",
"evidence": "/affected/18/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.14-1ubuntu2",
"evidence": "/affected/18/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "zsync",
"evidence": "/affected/19/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.6.2-9",
"evidence": "/affected/19/versions"
},
{
"value": "0.6.3-2",
"evidence": "/affected/19/versions"
}
]
},
{
"name": {
"value": "klibc",
"evidence": "/affected/20/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.0.14-1ubuntu2",
"evidence": "/affected/20/ranges"
}
],
"affected_versions": [
{
"value": "2.0.14-1ubuntu1",
"evidence": "/affected/20/versions"
}
]
},
{
"name": {
"value": "zsync",
"evidence": "/affected/21/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.6.2-8",
"evidence": "/affected/21/versions"
},
{
"value": "0.6.2-9",
"evidence": "/affected/21/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2016-9843",
"aliases": [
"UBUNTU-CVE-2016-9843"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.3-0ubuntu1.14.04.3+esm4"
}
]
}
],
"package": {
"name": "klibc",
"purl": "pkg:deb/ubuntu/klibc?arch=source&distro=esm-infra-legacy%2Ftrusty",
"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"versions": [
"2.0.1-3.1ubuntu2",
"2.0.2-1ubuntu1",
"2.0.2-1ubuntu2",
"2.0.3-0ubuntu1",
"2.0.3-0ubuntu1.14.04.1",
"2.0.3-0ubuntu1.14.04.2",
"2.0.3-0ubuntu1.14.04.3",
"2.0.3-0ubuntu1.14.04.3+esm2",
"2.0.3-0ubuntu1.14.04.3+esm3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-9843.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "klibc-utils",
"binary_version": "2.0.3-0ubuntu1.14.04.3+esm4"
},
{
"binary_name": "libklibc",
"binary_version": "2.0.3-0ubuntu1.14.04.3+esm4"
}
],
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/ubuntu/zlib?arch=source&distro=esm-infra-legacy%2Ftrusty",
"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"versions": [
"1:1.2.8.dfsg-1ubuntu1",
"1:1.2.8.dfsg-1ubuntu1.1",
"1:1.2.8.dfsg-1ubuntu1.1+esm1",
"1:1.2.8.dfsg-1ubuntu1.1+esm2",
"1:1.2.8.dfsg-1ubuntu1.1+esm3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-9843.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lib32z1",
"binary_version": "1:1.2.8.dfsg-1ubuntu1.1+esm3"
},
{
"binary_name": "lib64z1",
"binary_version": "1:1.2.8.dfsg-1ubuntu1.1+esm3"
},
{
"binary_name": "libx32z1",
"binary_version": "1:1.2.8.dfsg-1ubuntu1.1+esm3"
},
{
"binary_name": "zlib-bin",
"binary_version": "1:1.2.8.dfsg-1ubuntu1.1+esm3"
},
{
"binary_name": "zlib1g",
"binary_version": "1:1.2.8.dfsg-1ubuntu1.1+esm3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.1-3ubuntu1.3"
}
]
}
],
"package": {
"name": "rsync",
"purl": "pkg:deb/ubuntu/rsync?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"3.1.1-3",
"3.1.1-3ubuntu1",
"3.1.1-3ubuntu1.1",
"3.1.1-3ubuntu1.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-9843.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "rsync",
"binary_version": "3.1.1-3ubuntu1.3"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.8.dfsg-2ubuntu4.3"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/ubuntu/zlib?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"1:1.2.8.dfsg-2ubuntu4",
"1:1.2.8.dfsg-2ubuntu4.1"
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"https://ubuntu.com/security/notices/USN-4246-1",
"https://ubuntu.com/security/notices/USN-4292-1",
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"https://ubuntu.com/security/notices/USN-7959-1"
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"published_at": "2017-05-23T04:29:00+00:00"
}