PT-2025-35350 · Linux+4 · Linux Kernel+4

Jiaming Zhang

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Published

2025-07-17

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Updated

2026-05-26

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CVE-2025-38677

CVSS v3.1

7.1

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/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's f2fs implementation related to out-of-boundary access in dnode pages. The issue stems from a corrupted image where a dnode shares a node ID with its inode. During the f2fs get dnode of data() function, an attempt is made to access a block address within the dnode at an offset, but the dnode is parsed as an inode node, leading to an invalid memory access calculation (360 + 934 * 4 = 4096 with 4 bytes). The root cause is a lack of sanity checks for node IDs of direct nodes during the f2fs get dnode of data() function.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2025-15767
CVE-2025-38677
DLA-4327-1
DLA-4328-1
DSA-6008-1
DSA-6009-1
ECHO-2848-EACB-65A6
MGASA-2025-0234
MGASA-2025-0235
USN-7909-1
USN-7909-2
USN-7909-3
USN-7909-4
USN-7909-5
USN-7910-1
USN-7910-2
USN-7933-1
USN-7938-1
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
Red Os
Ubuntu