🛡️ CVE-2026-47328 on Ubuntu — linux

Distribution advisory

This page covers CVE-2026-47328 as tracked by Ubuntu, for the package linux. The fix is available in version 7.0.0-22.22; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, 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 low, availability high.

CVSS metrics in full

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

• Attack vector: Local — a local account, shell or session on the host is needed.
• Attack complexity: Low — the attack works reliably, with no preparation.
• 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: Low — limited, and the attacker does not choose what is affected.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

UBUNTU-CVE-2026-47328 is classified as CWE-590: Free of Memory not on the Heap. The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc().

Affected software

UBUNTU-CVE-2026-47328 is recorded against 129 packages.

• linux (fixed in 7.0.0-22.22)
• linux-allwinner-5.19
• linux-aws (fixed in 7.0.0-1006.6)
• 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-aws-6.14
• linux-aws-6.17 (fixed in 6.17.0-1017.17~24.04.1)
• linux-aws-6.2
• linux-aws-6.5
• linux-aws-6.8 (fixed in 6.8.0-1057.60~22.04.1)
• linux-aws-fips (fixed in 6.8.0-1057.60+fips1)
• linux-azure (fixed in 7.0.0-1007.7)
• linux-azure-5.11
• linux-azure-5.13
• linux-azure-5.19
• linux-azure-5.3
• linux-azure-5.8
• linux-azure-6.11
• linux-azure-6.17 (fixed in 6.17.0-1017.17~24.04.1)
• linux-azure-6.2

Timeline and source

Published on 28 May 2026 and last revised on 17 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)

Other advisories for this package

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

• DEBIAN-CVE-2022-4994 (published 30 Jul 2026)
• CVE-2026-35233 (4.4 Medium, published 1 May 2026)
• CVE-2026-21996 (3.3 Low, published 1 May 2026)
• CVE-2026-21991 (5.5 Medium, published 16 Mar 2026)
• CGA-w6xv-3fg4-grm5 (published 29 Jan 2026)
• CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
• CGA-2qp7-6757-fmgc (published 7 Jan 2026)
• CGA-9p62-x2f6-7rmw (published 7 Jan 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-590: Free of Memory not on the Heap) in other software:

• CVE-2026-18582 (5.3 Medium, published 3 Aug 2026)
• CVE-2025-7006 (5.5 Medium, published 12 Jun 2026)
• CVE-2026-47328 (6.1 Medium, published 28 May 2026)
• CVE-2026-20810 (7.8 High, published 13 Jan 2026)
• CVE-2025-54899 (7.8 High, published 9 Sep 2025)
• CVE-2025-42996 (5.6 Medium, published 10 Jun 2025)
• CVE-2025-42995 (7.5 High, published 10 Jun 2025)
• CVE-2025-42994 (7.5 High, published 10 Jun 2025)

CVE-2026-47328 on other distributions

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

Details

Affected Packages

References