Distribution advisory
This page covers CVE-2025-22840 as tracked by Alpine, 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 high, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability low.
CVSS metrics in full
The score comes from this vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- 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.
- Attack requirements: Present — the target has to be in a particular state for the attack to work.
- Privileges required: Low — an ordinary user account is enough.
- User interaction: Passive — a victim action is involved, but not a deliberate one.
- Confidentiality impact: High — total loss, or loss the attacker controls.
- Integrity impact: High — total loss, or loss the attacker controls.
- Availability impact: Low — limited, and the attacker does not choose what is affected.
Weakness class
ALPINE-CVE-2025-22840 is classified as CWE-1281: Sequence of Processor Instructions Leads to Unexpected Behavior. Specific combinations of processor instructions lead to undesirable behavior such as locking the processor until a hard reset performed.
Affected software
ALPINE-CVE-2025-22840 is recorded against 1 package.
- intel-ucode (fixed in 20250812-r0)
Timeline and source
Published on 12 August 2025 and last revised on 15 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
security.alpinelinux.org (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-1281: Sequence of Processor Instructions Leads to Unexpected Behavior) in other software:
