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CVE-2026-80528

Linux

In the Linux kernel, the following vulnerability has been resolved: ceph: avoid fs reclaim while using current->journal_info handle_reply() stores a `ceph_mds_request` pointer in `current->journal_info` while filling the inode and dentry cache from an MDS reply. An allocation in this section can enter direct reclaim and prune dentries from another filesystem. If this dirties an ext4 inode, ext4 starts a JBD2 transaction. JBD2 interprets the Ceph request in `current->journal_info` as a journal handle and dereferences the request's `r_tid` as `h_transaction`, causing a kernel crash, e.g.: Una...

CVSS
9.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.27
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 9.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: ceph: avoid fs reclaim while using current->journal_info handle_reply() stores a `ceph_mds_request` pointer in `current->journal_info` while filling the inode and dentry cache from an MDS reply. An allocation in this section can enter direct reclaim and prune dentries from another filesystem. If this dirties an ext4 inode, ext4 starts a JBD2 transaction. JBD2 interprets the Ceph request in `current->journal_info` as a journal handle and dereferences the request's `r_tid` as `h_transaction`, causing a kernel crash, e.g.: Una...

Affected product and versions

Product
Linux
Affected versions
>= 315f24088048a51eed341c53be66ea477a3c7d16 < ca5fa2380dd90a0adb01580fa6225025351a90f6, >= 315f24088048a51eed341c53be66ea477a3c7d16 < 00c12f57a87f537fa8779258fb3a03003a99963e, >= 315f24088048a51eed341c53be66ea477a3c7d16 < 4dbb2c02558e71f93510a6461d7e798b67426b49, >= 315f24088048a51eed341c53be66ea477a3c7d16 < c8a21660c3b90864c391164eea5622e7b5b2897c, >= 315f24088048a51eed341c53be66ea477a3c7d16 < 47b745747b3aa39064724a642884f9df924ddf20, >= 315f24088048a51eed341c53be66ea477a3c7d16 < 79d95b43ca090426399651ed580dd9bf2db36ab8, >= 315f24088048a51eed341c53be66ea477a3c7d16 < b6a0989613072499633e761a1536428a466de7d3, >= 315f24088048a51eed341c53be66ea477a3c7d16 < 5b602344a49e039e792ce5a8923bcc61412ee134, >= 4.6
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