{"id":"CVE-2026-52958","revision":null,"records":[{"revision":"358e84a98e824e67b54710e201482b00","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-52958","aliases":[],"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":0,"publishedAt":"2026-06-24T16:28:39.723+00:00","modifiedAt":"2026-10-19T19:47:10.414+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/ceph/osdmap.c\"\n ],\n \"versions\": [\n {\n \"version\": \"dcbc919a5dc8c2629684a113a90c0b6fe10c3462\",\n \"lessThan\": \"36a79759a288961b1ff28a68ec2d1f56f6848098\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"dcbc919a5dc8c2629684a113a90c0b6fe10c3462\",\n \"lessThan\": \"3f2575bb7f955d42569d96c3e04fa958a0dcf4b4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"dcbc919a5dc8c2629684a113a90c0b6fe10c3462\",\n \"lessThan\": \"8713bbc4b2b9ad78f803978e54b7e49dd21bd9be\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"dcbc919a5dc8c2629684a113a90c0b6fe10c3462\",\n \"lessThan\": \"0d2dd7e6bb74fd7712aa73457a4a821906c6863a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"dcbc919a5dc8c2629684a113a90c0b6fe10c3462\",\n \"lessThan\": \"e7187f33c02488697ec0d01d82bf7a3f8deaba8f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"dcbc919a5dc8c2629684a113a90c0b6fe10c3462\",\n \"lessThan\": \"48df98d12b15360cd56af5c1f460307b340c1197\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"dcbc919a5dc8c2629684a113a90c0b6fe10c3462\",\n \"lessThan\": \"ee933694645dac062d65fc2743f92bc06fa0db6b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"dcbc919a5dc8c2629684a113a90c0b6fe10c3462\",\n \"lessThan\": \"35d0ed82d03e5ee77ea4f31f20e29562a7721649\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/ceph/osdmap.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.3\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.3\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.258\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.209\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.175\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.141\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.91\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.33\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.10\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","score":9.1,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/36a79759a288961b1ff28a68ec2d1f56f6848098","https://git.kernel.org/stable/c/3f2575bb7f955d42569d96c3e04fa958a0dcf4b4","https://git.kernel.org/stable/c/8713bbc4b2b9ad78f803978e54b7e49dd21bd9be","https://git.kernel.org/stable/c/0d2dd7e6bb74fd7712aa73457a4a821906c6863a","https://git.kernel.org/stable/c/e7187f33c02488697ec0d01d82bf7a3f8deaba8f","https://git.kernel.org/stable/c/48df98d12b15360cd56af5c1f460307b340c1197","https://git.kernel.org/stable/c/ee933694645dac062d65fc2743f92bc06fa0db6b","https://git.kernel.org/stable/c/35d0ed82d03e5ee77ea4f31f20e29562a7721649"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-52958","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-52958","identifiers":["CVE-2026-52958"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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