PT-2025-35983 · Linux+4 · Linux Kernel+4

Published

2025-07-16

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Updated

2026-04-20

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CVE-2025-38710

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A flaw exists in the Linux kernel related to the validation of i depth for exhash directories within the gfs2 filesystem. A fuzzer test revealed corruption leading to a depth of 0 in dir e read(), causing an undefined shift operation. The minimum depth for an exhash directory is determined by ilog2(sdp->sd hash ptrs), and a depth of 0 is invalid. The issue arises from an undefined shift by 32 at index = hash >> (32 - dip->i depth). The calculation in dir make exhash() has been modified to use ilog2() for clarity.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-01397
CVE-2025-38710
ECHO-C651-9255-A26E
OESA-2025-2310
OESA-2025-2311
OESA-2025-2312
OESA-2025-2313
OESA-2025-2314
OESA-2025-2315
OPENSUSE-SU-2025:20081-1
SUSE-SU-2025:03601-1
SUSE-SU-2025:03633-1
SUSE-SU-2025:21074-1
SUSE-SU-2025:21139-1
SUSE-SU-2025:21179-1
SUSE-SU-2025:3725-1
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
Suse
Ubuntu