PT-2025-35964 · Linux+5 · Linux Kernel+5
Published
2025-06-30
·
Updated
2026-04-20
·
CVE-2025-38691
CVSS v3.1
5.5
Medium
| Vector | AV: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
The Linux kernel contains a flaw in the pNFS block/scsi layout implementation. The issue arises from a dereference of uninitialized pointers within the
ext tree free commitdata() function during the encoding of extents. This occurs when the next tree prepare commit() function reallocates a larger buffer to retry encoding extents, and the "layoutupdate pages" page array is initialized only after the retry loop. Additionally, there is no limit on the maximum possible buffer size, potentially leading to layout commits exceeding the maximum RPC size accepted by the server.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use of Uninitialized Resource
Access of Uninitialized Pointer
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Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu