{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-5215","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2023-09-26T21:54:47.184Z","datePublished":"2023-09-28T13:55:32.462Z","dateUpdated":"2025-11-08T08:55:24.112Z"},"containers":{"cna":{"title":"Libnbd: crash or misbehaviour when nbd server returns an unexpected block size","metrics":[{"other":{"content":{"value":"Low","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libnbd","defaultStatus":"affected","versions":[{"version":"0:1.18.1-3.el9","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/a:redhat:enterprise_linux:9::crb"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"virt:rhel/libnbd","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8 Advanced Virtualization","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"virt:av/libnbd","defaultStatus":"affected","cpes":["cpe:/a:redhat:advanced_virtualization:8::el8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8 Advanced Virtualization","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"virt-devel:av/libnbd","defaultStatus":"affected","cpes":["cpe:/a:redhat:advanced_virtualization:8::el8"]}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2024:2204","name":"RHSA-2024:2204","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-5215","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2241041","name":"RHBZ#2241041","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://listman.redhat.com/archives/libguestfs/2023-September/032635.html"}],"datePublic":"2023-09-21T00:00:00.000Z","problemTypes":[{"descriptions":[{"cweId":"CWE-241","description":"Improper Handling of Unexpected Data Type","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-241: Improper Handling of Unexpected Data Type","timeline":[{"lang":"en","time":"2023-09-21T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2023-09-21T00:00:00.000Z","value":"Made public."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2025-11-08T08:55:24.112Z"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T07:52:07.789Z"},"title":"CVE Program Container","references":[{"url":"https://access.redhat.com/errata/RHSA-2024:2204","name":"RHSA-2024:2204","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-5215","tags":["vdb-entry","x_refsource_REDHAT","x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2241041","name":"RHBZ#2241041","tags":["issue-tracking","x_refsource_REDHAT","x_transferred"]},{"url":"https://listman.redhat.com/archives/libguestfs/2023-September/032635.html","tags":["x_transferred"]}]}]}}