PT-2025-37223 · Linux+3 · Linux Kernel+3

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CVE-2025-39765

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Published

2025-08-21

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Updated

2026-08-30

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 versions prior to 6.15.8
Description: A flaw exists in the Linux kernel's ALSA timer functionality. Specifically, within the snd utimer create() function, a potential issue arises if the kasprintf() function returns NULL. This can lead to a call to snd utimer put id(), which subsequently attempts to free an unallocated ID (0) using ida free(). This condition was reported by the syzkaller fuzzer.
Recommendations: Update to Linux kernel version 6.15.8 or later.

Exploit

Fix

DoS

NULL Pointer Dereference

Allocation of Resources Without Limits

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Weakness Enumeration

Related Identifiers

BDU:2025-15697
CVE-2025-39765
DSA-6008-1
OPENSUSE-SU-2025:20081-1
SUSE-SU-2025:21074-1
SUSE-SU-2025:21139-1
SUSE-SU-2025:21179-1
SUSE-SU-2026:20560-1

Affected Products

Astra Linux
Linux Kernel
Red Os
Suse