{"api_version":"1","generated_at":"2026-07-04T05:37:52+00:00","cve":"CVE-2026-52958","urls":{"html":"https://cve.report/CVE-2026-52958","api":"https://cve.report/api/cve/CVE-2026-52958.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-52958","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-52958"},"summary":{"title":"libceph: Fix potential out-of-bounds access in osdmap_decode()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Fix potential out-of-bounds access in osdmap_decode()\n\nWhen decoding osd_state and osd_weight from an incoming osdmap in\nosdmap_decode(), both are decoded for each osd, i.e., map->max_osd\ntimes. The ceph_decode_need() check only accounts for\nsizeof(*map->osd_weight) once. This can potentially result in an\nout-of-bounds memory access if the incoming message is corrupted such\nthat the max_osd value exceeds the actual content of the osdmap message.\n\nThis patch fixes the issue by changing the corresponding part in the\nceph_decode_need() check to account for\nmap->max_osd*sizeof(*map->osd_weight).","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:06","updated_at":"2026-06-28 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the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Fix potential out-of-bounds access in osdmap_decode()\n\nWhen decoding osd_state and osd_weight from an incoming osdmap in\nosdmap_decode(), both are decoded for each osd, i.e., map->max_osd\ntimes. The ceph_decode_need() check only accounts for\nsizeof(*map->osd_weight) once. This can potentially result in an\nout-of-bounds memory access if the incoming message is corrupted such\nthat the max_osd value exceeds the actual content of the osdmap message.\n\nThis patch fixes the issue by changing the corresponding part in the\nceph_decode_need() check to account for\nmap->max_osd*sizeof(*map->osd_weight)."}],"metrics":[{"cvssV3_1":{"baseScore":9.1,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-06-28T06:37:19.643Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/36a79759a288961b1ff28a68ec2d1f56f6848098"},{"url":"https://git.kernel.org/stable/c/3f2575bb7f955d42569d96c3e04fa958a0dcf4b4"},{"url":"https://git.kernel.org/stable/c/8713bbc4b2b9ad78f803978e54b7e49dd21bd9be"},{"url":"https://git.kernel.org/stable/c/0d2dd7e6bb74fd7712aa73457a4a821906c6863a"},{"url":"https://git.kernel.org/stable/c/e7187f33c02488697ec0d01d82bf7a3f8deaba8f"},{"url":"https://git.kernel.org/stable/c/48df98d12b15360cd56af5c1f460307b340c1197"},{"url":"https://git.kernel.org/stable/c/ee933694645dac062d65fc2743f92bc06fa0db6b"},{"url":"https://git.kernel.org/stable/c/35d0ed82d03e5ee77ea4f31f20e29562a7721649"}],"title":"libceph: Fix potential out-of-bounds access in osdmap_decode()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-52958","datePublished":"2026-06-24T16:28:39.723Z","dateReserved":"2026-06-09T07:44:35.373Z","dateUpdated":"2026-06-28T06:37:19.643Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:06","lastModifiedDate":"2026-06-28 08:16:26","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.2}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"52958","Ordinal":"1","Title":"libceph: Fix potential out-of-bounds access in osdmap_decode()","CVE":"CVE-2026-52958","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"52958","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Fix potential out-of-bounds access in osdmap_decode()\n\nWhen decoding osd_state and osd_weight from an incoming osdmap in\nosdmap_decode(), both are decoded for each osd, i.e., map->max_osd\ntimes. The ceph_decode_need() check only accounts for\nsizeof(*map->osd_weight) once. This can potentially result in an\nout-of-bounds memory access if the incoming message is corrupted such\nthat the max_osd value exceeds the actual content of the osdmap message.\n\nThis patch fixes the issue by changing the corresponding part in the\nceph_decode_need() check to account for\nmap->max_osd*sizeof(*map->osd_weight).","Type":"Description","Title":"libceph: Fix potential out-of-bounds access in osdmap_decode()"}]}}}