Review reviewCritical

CVE-2024-42256

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix server re-repick on subrequest retry When a subrequest is marked for needing retry, netfs will call cifs_prepare_write() which will make cifs repick the server for the op before renegotiating credits; it then calls cifs_issue_write() which invokes smb2_async_writev() - which re-repicks the server. If a different server is then selected, this causes the increment of server->in_flight to happen against one record and the decrement to happen against another, leading to misaccounting. Fix this by just removing the rep...

CVSS: 9.8
EPSS: 0.69%
CISA KEV: Not listed
Published: 2024.08.08

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.69%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= 3ee1a1fc39819906f04d6c62c180e760cd3a689d < b1d0a566769b6fb3795b5289fc1daf9e0638d97a, >= 3ee1a1fc39819906f04d6c62c180e760cd3a689d < de40579b903883274fe203865f29d66b168b7236, >= 6.10, >= 6.10 < 6.10.1
Fixed versions: 6.10.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux Linux, linux kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
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