CVE-2026-89648High· 7.0▾ TwilightA flaw was found in the Linux kernel's Ceph client. A malicious or compromised Ceph Metadata Server (MDS) could send a specially crafted reply with an unbounded number of delegated inode intervals. This could cause the client to enter an i…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
0.2% → 0.6%
— → 5.9
none → medium
— → 7.5
none → high
Last analysed / modified upstream
7.5 → 5.9
high → medium
5.9 → 7.5
medium → high
7.5 → 5.9
high → medium
5.9 → 7
medium → high
A flaw was found in the Linux kernel's Ceph client. A malicious or compromised Ceph Metadata Server (MDS) could send a specially crafted reply with an unbounded number of delegated inode intervals. This could cause the client to enter an infinite loop or exhaust memory resources, leading to a denial of service (DoS) for the client system.
kernel: ceph: cap delegated inode count in ceph_parse_deleg_inos() — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Affected:
No fix planned:
Not affected:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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