Review reviewCritical

CVE-2025-68284

Linux

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
EPSS
0.52%
41.4% percentile
CISA KEV
Not listed
Published
2025.12.17
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.52%
Technical severityCVSS 9.8

Vulnerability overview

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 ]

Affected product and versions

Product
Linux
Affected versions
>= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 < f22c55a20a2d9ffbbac57408d5d488cef8201e9d, >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 < 8dfcc56af28cffb8f25fb9be37b3acc61f2a3d09, >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 < ccbccfba25e9aa395daaea156b5e7790910054c4, >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 < 5ef575834ca99f719d7573cdece9df2fe2b72424, >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 < 6920ff09bf911bc919cd7a6b7176fbdd1a6e6850, >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 < 7fce830ecd0a0256590ee37eb65a39cbad3d64fc, >= 5.11
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available