CVE-2025-39766
high
CVSS v3
7.8
CVSS v4 NEW
—
VIR risk
7.8
Description
Important: kernel security update
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.1.153-1 |
| debian | bullseye | fixed | 5.10.244-1 |
| debian | forky | fixed | 6.16.5-1 |
| debian | sid | fixed | 6.16.5-1 |
| debian | trixie | fixed | 6.12.48-1 |
| linux-kernel | affected | 5.4.297 | |
| linux-kernel | 6.17 | affected | |
| debian | 11.0 | affected | |
| rocky | 9 | fixed | |
| almalinux | 9 | fixed | kernel-headers-5.14.0-611.49.1.el9_7.aarch64.rpm |
References
- https://access.redhat.com/errata/RHSA-2026:19568
- https://access.redhat.com/errata/RHSA-2026:8921
- https://git.kernel.org/stable/c/0dacfc5372e314d1219f03e64dde3ab495a5a25e
- https://git.kernel.org/stable/c/15de71d06a400f7fdc15bf377a2552b0ec437cf5
- https://git.kernel.org/stable/c/62d591dde4defb1333d202410609c4ddeae060b3
- https://git.kernel.org/stable/c/710866fc0a64eafcb8bacd91bcb1329eb7e5035f
- https://git.kernel.org/stable/c/7689ab22de36f8db19095f6bdf11f28cfde92f5c
- https://git.kernel.org/stable/c/aa12ee1c1bd260943fd6ab556d8635811c332eeb
- https://git.kernel.org/stable/c/de04ddd2980b48caa8d7e24a7db2742917a8b280
- https://git.kernel.org/stable/c/ff57186b2cc39766672c4c0332323933e5faaa88
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://www.suse.com/security/cve/CVE-2025-39766.html
- https://security-tracker.debian.org/tracker/CVE-2025-39766
- https://bugzilla.redhat.com/2394648
- https://bugzilla.redhat.com/2425046
- https://errata.almalinux.org/9/ALSA-2026-8921.html
- https://errata.rockylinux.org/RLSA-2026:8921
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.