SB2026040309 - Ubuntu update for linux

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026040309

SB2026040309 - Ubuntu update for linux

Published: April 3, 2026

Security Bulletin ID SB2026040309
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2026-23111)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the nft_map_catchall_activate() function in net/netfilter/nf_tables_api.c. A local user can escalate privileges on the system.


2) Use-after-free (CVE-ID: CVE-2026-23074)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the teql_qdisc_init() function in net/sched/sch_teql.c. A local user can escalate privileges on the system.


3) NULL pointer dereference (CVE-ID: CVE-2026-23060)

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

The vulnerability exists due to NULL pointer dereference within the crypto_authenc_esn_encrypt() and crypto_authenc_esn_decrypt() functions in crypto/authencesn.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References