PT-2025-20531 · Linux+6 · Linux Kernel+6

CVE-2025-37879

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Published

2025-03-19

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Updated

2026-08-25

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 The issue concerns the Linux kernel's handling of read/write replies in the 9p/net module. Specifically, in p9 client write() and p9 client read once(), if a server incorrectly replies with a negative write/read count, it could lead to improper handling due to signed variables. The problem is resolved by making these variables unsigned. This prevents a potential null pointer dereference.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

NULL Pointer Dereference

Out of bounds Read

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Weakness Enumeration

Related Identifiers

AZL-70153
BDU:2025-12137
CVE-2025-37879
DLA-4193-1
ECHO-AF45-BD42-0F31
MGASA-2025-0182
MGASA-2025-0183
OESA-2025-2120
OESA-2025-2121
OESA-2025-2122
SUSE-SU-2025:01919-1
SUSE-SU-2025:01951-1
SUSE-SU-2025:01964-1
SUSE-SU-2025:01965-1
SUSE-SU-2025:01967-1
SUSE-SU-2025:01972-1
SUSE-SU-2025:01983-1
SUSE-SU-2025:02000-1
SUSE-SU-2025:20408-1
SUSE-SU-2025:20413-1
SUSE-SU-2025:20419-1
SUSE-SU-2025:20421-1
SUSE-SU-2025_01951-1
SUSE-SU-2025_01964-1
SUSE-SU-2025_01965-1
SUSE-SU-2025_01967-1
SUSE-SU-2025_01972-1
SUSE-SU-2025_01983-1
SUSE-SU-2025_02000-1
USN-7594-1
USN-7594-2
USN-7594-3
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

Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu