🛡️ CVE-2023-4732 on Ubuntu — linux-allwinner-5.19

Distribution advisory

This page covers CVE-2023-4732 as tracked by Ubuntu, for the package linux-allwinner-5.19. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

• Attack vector: Local — a local account, shell or session on the host is needed.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: None.
• Integrity impact: None.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

UBUNTU-CVE-2023-4732 is classified as CWE-366: Race Condition within a Thread. If two threads of execution use a resource simultaneously, there exists the possibility that resources may be used while invalid, in turn making the state of execution undefined.

Affected software

UBUNTU-CVE-2023-4732 is recorded against 53 packages.

• linux-allwinner-5.19
• linux-aws-5.0
• linux-aws-5.11
• linux-aws-5.13
• linux-aws-5.19
• linux-aws-5.3
• linux-aws-5.8
• linux-azure
• linux-azure-5.11
• linux-azure-5.13
• linux-azure-5.19
• linux-azure-5.3
• linux-azure-5.8
• linux-azure-edge
• linux-azure-fde
• linux-azure-fde-5.19
• linux-gcp
• linux-gcp-5.11
• linux-gcp-5.13
• linux-gcp-5.19
• linux-gcp-5.3
• linux-gcp-5.8
• linux-gke
• linux-gke-4.15

Timeline and source

Published on 3 October 2023 and last revised on 24 October 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
access.redhat.com (Report)
www.cve.org (Report)

Other advisories for this package

linux-allwinner-5.19 has other advisories on record. If you are patching this one, these are worth checking on the same host:

• UBUNTU-CVE-2022-4994 (published 30 Jul 2026)
• UBUNTU-CVE-2023-20585 (published 16 Apr 2026)
• UBUNTU-CVE-2022-50814 (published 30 Dec 2025)
• UBUNTU-CVE-2022-50847 (published 30 Dec 2025)
• UBUNTU-CVE-2022-50879 (published 30 Dec 2025)
• UBUNTU-CVE-2022-50834 (published 30 Dec 2025)
• UBUNTU-CVE-2022-50866 (published 30 Dec 2025)
• UBUNTU-CVE-2022-50820 (published 30 Dec 2025)

Same weakness in other software

These advisories are the same class of weakness (CWE-366: Race Condition within a Thread) in other software:

• CVE-2026-46181 (7.8 High, published 28 May 2026)
• CVE-2026-3904 (6.2 Medium, published 11 Mar 2026)
• CVE-2026-23684 (5.9 Medium, published 10 Feb 2026)
• CVE-2026-22819 (5.9 Medium, published 13 Jan 2026)
• CVE-2025-58143 (9.8 Critical, published 11 Sep 2025)
• CVE-2025-31115 (published 3 Apr 2025)
• CVE-2024-10630 (7.8 High, published 14 Jan 2025)
• CVE-2023-6546 (7.0 High, published 21 Dec 2023)

CVE-2023-4732 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Affected Packages

References