{"id":"CVE-2026-52958","title":"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 …","summary":"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 …","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","published":"2026-06-24","updated":"2026-07-10","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-52958","references":[{"url":"https://git.kernel.org/stable/c/0d2dd7e6bb74fd7712aa73457a4a821906c6863a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/35d0ed82d03e5ee77ea4f31f20e29562a7721649","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/36a79759a288961b1ff28a68ec2d1f56f6848098","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3f2575bb7f955d42569d96c3e04fa958a0dcf4b4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/48df98d12b15360cd56af5c1f460307b340c1197","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8713bbc4b2b9ad78f803978e54b7e49dd21bd9be","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e7187f33c02488697ec0d01d82bf7a3f8deaba8f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ee933694645dac062d65fc2743f92bc06fa0db6b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00537,"epssPercentile":0.44208,"ingestedAt":"2026-07-11T13:13:24.906Z","slug":"CVE-2026-52958","body":"## Overview\n\nIn 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).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}