🛡️ CVE-2025-40266 on BellSoft — linux-lts

Distribution advisory

This page covers CVE-2025-40266 as tracked by BellSoft, for the package linux-lts. The fix is available in version 6.18.35-r1; 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 administrative 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 high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/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: High — administrative rights are needed first.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Changed — a successful attack reaches components beyond the vulnerable one.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Affected software

BELL-CVE-2025-40266 is recorded against 1 package.

• linux-lts (from 6.12.92-r1 up to 6.18.35-r1)

Timeline and source

Published on 9 December 2025 and last revised on 31 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

docs.bell-sw.com (Advisory)

CVE-2025-40266 on other distributions

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

Details

Affected Packages

References