High
pacemaker — security advisory
A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow vulnerability in the remote message decompression process. By sending a specially crafted compressed remote message before authentication, an attacker can cause memory corruption, leading to a denial of service (DoS) in the CIB remote listener. This can result in the affected service crashing.
- Products
- pacemaker
- Affected versions
- 1.1.12-0ubuntu2, 1.1.12-0ubuntu3, 1.1.14-1ubuntu1, 1.1.14-1ubuntu2, 1.1.14-2ubuntu1, 1.1.14-2ubuntu1.1, 1.1.14-2ubuntu1.2, 1.1.14-2ubuntu1.3, 1.1.14-2ubuntu1.4, 1.1.14-2ubuntu1.5, 1.1.14-2ubuntu1.6, 1.1.14-2ubuntu1.7, 1.1.14-2ubuntu1.8, 1.1.14-2ubuntu1.9, 1.1.14~rc4-2ubuntu1, 1.1.16-1ubuntu1, 1.1.18-0ubuntu1, 1.1.18-0ubuntu1.1, 1.1.18-0ubuntu1.2, 1.1.18-0ubuntu1.3, 1.1.18~rc3-1ubuntu1, 1.1.18~rc4-1ubuntu1, 2.0.1-4ubuntu2, 2.0.1-5ubuntu1, 2.0.1-5ubuntu5, 2.0.3-3ubuntu1, 2.0.3-3ubuntu3, 2.0.3-3ubuntu4, 2.0.3-3ubuntu4.1, 2.0.3-3ubuntu4.2, 2.0.3-3ubuntu4.3, 2.0.5-2ubuntu3, 2.1.2-1ubuntu1, 2.1.2-1ubuntu2, 2.1.2-1ubuntu3, 2.1.2-1ubuntu3.1, 2.1.6-1ubuntu1, 2.1.6-4ubuntu1, 2.1.6-5ubuntu1, 2.1.6-5ubuntu2, 2.1.8-1ubuntu2, 2.1.8-1ubuntu5, 3.0.0-2ubuntu1, 3.0.1-1.1ubuntu1, 3.0.1-1ubuntu1, 3.0.1-1ubuntu2, 3.0.1-1ubuntu3
- Fixed versions
- Not specified
- CVEs
- CVE-2026-10649
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:00 UTC · Revision 1
Source evidence
A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow vulnerability in the remote message decompression process. By sending a specially crafted compressed remote message before authentication, an attacker can cause memory corruption, leading to a denial of service (DoS) in the CIB remote listener. This can result in the affected service crashing.
osv:UBUNTU-CVE-2026-10649
pacemaker
Fixed versions: Not specified
pacemaker
Fixed versions: Not specified
pacemaker
Fixed versions: Not specified
pacemaker
Fixed versions: Not specified
pacemaker
Fixed versions: Not specified
pacemaker
Fixed versions: Not specified
pacemaker
Fixed versions: Not specified
pacemaker
Fixed versions: Not specified
Complete source record
{
"id": "18d3af4d6a4d3d08e6dace932f5bef065db16e2f15fdb7927ee90ad863731f40",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-10649",
"method": "structured",
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"summary": "A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow vulnerability in the remote message decompression process. By sending a specially crafted compressed remote message before authentication, an attacker can cause memory corruption, leading to a denial of service (DoS) in the CIB remote listener. This can result in the affected service crashing.",
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],
"modified": "2026-10-17T12:58:01.315110137Z",
"provider": "osv",
"upstream": [
"CVE-2026-10649"
],
"references": [
"https://ubuntu.com/security/CVE-2026-10649",
"https://www.cve.org/CVERecord?id=CVE-2026-10649",
"https://www.openwall.com/lists/oss-security/2026/06/16/6",
"https://github.com/clusterLabs/pacemaker/pull/4128"
]
},
"related_cves": [
{
"value": "CVE-2026-10649",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357876,
"published_at": "2026-06-16T17:16:00+00:00"
}