Distribution advisory
This page covers CVE-2025-21090 as tracked by BellSoft, for the package intel-ucode. The fix is available in version 20250812-r0; 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 changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality none, integrity none, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/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: Changed — a successful attack reaches components beyond the vulnerable one.
- Confidentiality impact: None.
- Integrity impact: None.
- Availability impact: High — total loss, or loss the attacker controls.
Weakness class
BELL-CVE-2025-21090 is classified as CWE-771: Missing Reference to Active Allocated Resource. The product does not properly maintain a reference to a resource that has been allocated, which prevents the resource from being reclaimed.
Affected software
BELL-CVE-2025-21090 is recorded against 1 package.
- intel-ucode (from 20230214-r0 up to 20250812-r0)
Timeline and source
Published on 14 August 2025 and last revised on 26 January 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
docs.bell-sw.com (Advisory)
Other advisories for this package
intel-ucode has other advisories on record. If you are patching this one, these are worth checking on the same host:
Same weakness in other software
These advisories are the same class of weakness (CWE-771: Missing Reference to Active Allocated Resource) in other software:
