PT-2025-35977 · Linux+3 · Linux Kernel+3

Published

2025-07-08

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Updated

2026-04-20

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CVE-2025-38704

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/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 The Linux kernel contains a flaw related to read-copy-update (RCU). During CPU online preparation, if the creation of an rcuop kthread fails, the rdp's->nocb cb kthread pointer may not be assigned, while rdp's->nocb gp rdp and rdp's->rdp gp->nocb gp kthread remain valid. Subsequent re-offload operations on an offline CPU could then lead to access of an invalid rdp's->nocb cb kthread pointer. The issue is addressed by using rdp's->nocb gp kthread instead of rdp gp's->nocb gp kthread for safety checks.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

AZL-66893
AZL-70754
BDU:2026-02241
CVE-2025-38704
ECHO-4677-4B81-A83E
OPENSUSE-SU-2026:20145-1
SUSE-SU-2026:20207-1
SUSE-SU-2026:20220-1
SUSE-SU-2026:20228-1
USN-8028-1
USN-8028-2
USN-8028-3
USN-8028-4
USN-8028-5
USN-8028-6
USN-8028-7
USN-8028-8
USN-8031-1
USN-8031-2
USN-8031-3
USN-8052-1
USN-8052-2
USN-8074-1
USN-8074-2
USN-8126-1

Affected Products

Debian
Linuxmint
Linux Kernel
Ubuntu