PT-2026-61384 · Linux+1 · Linux Kernel+1

CVE-2026-64067

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Published

2026-07-19

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Updated

2026-09-07

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description An issue exists in the netfs component where the list of subrequests attached to stream->subrequests is accessed without locks by the functions netfs collect read results() and netfs collect write results(). These functions access subreq->flags without implementing a barrier after retrieving the subreq pointer from the list. Additionally, the functions responsible for building the list lack a write barrier, which may prevent the NETFS SREQ IN PROGRESS flag from being perceived as set when no lock is used.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Locking

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Weakness Enumeration

Related Identifiers

CVE-2026-64067
USN-8593-1
USN-8603-1
USN-8618-1
USN-8663-1
USN-8664-1
USN-8728-1

Affected Products

Linux Kernel
Ubuntu