SB2026042369 - Ubuntu update for linux-aws-fips

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) 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.

2) 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.

3) Memory leak (CVE-ID: CVE-2025-37849)

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

The vulnerability exists due to memory leak within the kvm_arch_vcpu_create() function in arch/arm64/kvm/arm.c. A local user can perform a denial of service (DoS) attack.

4) Resource management error (CVE-ID: CVE-2024-46816)

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

The vulnerability exists due to resource management error within the amdgpu_dm_initialize_drm_device() function in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c. A local user can perform a denial of service (DoS) attack.

5) NULL pointer dereference (CVE-ID: CVE-2022-49046)

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

The vulnerability exists due to NULL pointer dereference within the i2cdev_attach_adapter() function in drivers/i2c/i2c-dev.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-8200-2