{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-10649", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-06-02T15:15:07.547Z", "datePublished": "2026-06-16T15:57:38.911Z", "dateUpdated": "2026-08-21T12:12:59.238Z" }, "containers": { "cna": { "title": "Pacemaker: pacemaker: denial of service via integer overflow in remote message decompression", "metrics": [ { "other": { "content": { "value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A flaw was found in Pacemaker. 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"https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/o:redhat:enterprise_linux:6" ], "defaultStatus": "unaffected", "packageName": "pacemaker", "product": "Red Hat Enterprise Linux 6", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift:4" ], "defaultStatus": "unaffected", "packageName": "rhcos", "product": "Red Hat OpenShift Container Platform 4", "vendor": "Red Hat" } ], "datePublic": "2026-06-16T00:00:00.000Z", "descriptions": [ { "lang": "en", "value": "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." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-190", "description": "Integer Overflow or Wraparound", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-10649" }, { "name": "RHBZ#2462817", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2462817" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10649.json" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:43606" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:41041" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:40833" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:39322" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:42075" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:42076" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:42041" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:41042" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:39323" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:41044" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:41043" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:43606: Red Hat Enterprise Linux Server HighAvailability (v. 7 ELS), Red Hat Enterprise Linux Server ResilientStorage (v. 7 ELS)" }, { "lang": "en", "value": "RHSA-2026:41041: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux High Availability EUS (v. 10.0)" }, { "lang": "en", "value": "RHSA-2026:40833: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux High Availability (v. 10)" }, { "lang": "en", "value": "RHSA-2026:39322: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux HighAvailability (v. 8), Red Hat Enterprise Linux ResilientStorage (v. 8)" }, { "lang": "en", "value": "RHSA-2026:42075: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4), Red Hat Enterprise Linux High Availability AUS (v.8.4), Red Hat Enterprise Linux HighAvailability EUS EXTENSION (v.8.4)" }, { "lang": "en", "value": "RHSA-2026:42076: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6), Red Hat Enterprise Linux High Availability EUS EXTENSION (v.8.6)" }, { "lang": "en", "value": "RHSA-2026:42041: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8), Red Hat Enterprise Linux High Availability E4S (v.8.8), Red Hat Enterprise Linux High Availability TUS (v.8.8)" }, { "lang": "en", "value": "RHSA-2026:41042: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux High Availability EUS (v.9.6), Red Hat Enterprise Linux Resilient Storage EUS (v.9.6)" }, { "lang": "en", "value": "RHSA-2026:39323: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux High Availability (v. 9), Red Hat Enterprise Linux Resilient Storage (v. 9)" }, { "lang": "en", "value": "RHSA-2026:41044: Red Hat Enterprise Linux High Availability E4S (v.9.2), Red Hat Enterprise Linux Resilient Storage E4S (v.9.2)" }, { "lang": "en", "value": "RHSA-2026:41043: Red Hat Enterprise Linux High Availability E4S (v.9.4), Red Hat Enterprise Linux Resilient Storage E4S (v.9.4)" } ], "timeline": [ { "lang": "en", "time": "2026-04-26T20:09:35.000Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-06-16T00:00:00.000Z", "value": "Made public." } ], "title": "pacemaker: Pacemaker: Denial of Service via integer overflow in remote message decompression", "workarounds": [ { "lang": "en", "value": "Disable the Pacemaker CIB remote listener if it is not actively used. If the listener is required, restrict network access to trusted hosts by configuring firewall rules to limit inbound connections to the `remote-port` or `remote-tls-port`. These actions reduce the attack surface by limiting unauthenticated network exposure to the vulnerable component. A restart of the Pacemaker service may be necessary for these changes to be fully applied." } ], "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-08-21T12:12:59.238Z" } } ] } }