Critical 9.8Published Dec 16, 2025

CVE-2025-68284libceph: prevent potential out-of-bounds writes in handle_auth_session_key()

Updated under an hour ago (Oct 27, 2026, 8:20 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: libceph: prevent potential out-of-bounds writes in handle_auth_session_key() The len field originates from untrusted network packets. Boundary checks have been added to prevent potential out-of-bounds writes when decrypting the connection secret or processing service tickets. [ idryomov: changelog ]

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 before f22c55a20a2d9ffbbac57408d5d488cef8201e9d; 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 builds before 8dfcc56af28cffb8f25fb9be37b3acc61f2a3d09; from 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 before ccbccfba25e9aa395daaea156b5e7790910054c4; 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 builds before 5ef575834ca99f719d7573cdece9df2fe2b72424; from 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 before 6920ff09bf911bc919cd7a6b7176fbdd1a6e6850; 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 builds before 7fce830ecd0a0256590ee37eb65a39cbad3d64fc	CNA record

References

References

https://git.kernel.org/stable/c/f22c55a20a2d9ffbbac57408d5d488cef8201e9d
https://git.kernel.org/stable/c/8dfcc56af28cffb8f25fb9be37b3acc61f2a3d09
https://git.kernel.org/stable/c/ccbccfba25e9aa395daaea156b5e7790910054c4
https://git.kernel.org/stable/c/5ef575834ca99f719d7573cdece9df2fe2b72424
https://git.kernel.org/stable/c/6920ff09bf911bc919cd7a6b7176fbdd1a6e6850
https://git.kernel.org/stable/c/7fce830ecd0a0256590ee37eb65a39cbad3d64fc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.