SB2025120323 - Ubuntu update for linux 

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Main Vulnerability Database SB2025120323

SB2025120323 - Ubuntu update for linux

Published: December 3, 2025

Security Bulletin ID SB2025120323
Severity
Low
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2025-40109)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the crypto_del_default_rng() and crypto_register_rng() functions in crypto/rng.c. A local user can perform a denial of service (DoS) attack.


2) Resource management error (CVE-ID: CVE-2025-40108)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the geni_serial_set_rate(), qcom_geni_serial_set_termios(), geni_serial_resources_off(), qcom_geni_serial_pm(), qcom_geni_serial_probe(), qcom_geni_serial_remove() and qcom_geni_serial_resume() functions in drivers/tty/serial/qcom_geni_serial.c. A local user can perform a denial of service (DoS) attack.


3) Improper locking (CVE-ID: CVE-2025-40028)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the drivers/android/dbitmap.h. A local user can perform a denial of service (DoS) attack.


4) Improper locking (CVE-ID: CVE-2025-40027)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the p9_fd_cancelled() function in net/9p/trans_fd.c. A local user can perform a denial of service (DoS) attack.


5) Resource management error (CVE-ID: CVE-2025-40026)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the emulator_is_smm() and x86_emulate_instruction() functions in arch/x86/kvm/x86.c. A local user can perform a denial of service (DoS) attack.


6) Input validation error (CVE-ID: CVE-2025-40025)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the check_index_in_prev_nodes() function in fs/f2fs/recovery.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References