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CVE-2026-89503: Linux 6.8
CVE-2026-89503 affects linux. CVSS 3.1 base score 7.8 (HIGH, Source advisory). EPSS 0.00175 (percentile 0.06347), scored 06-Oct-2026. Fixed version: 7.2.6-1. Fixed version: 6.12.112-r0. Fixed version: 6.18.53-r0.
Affected technology
Linux · bce761d757452ba5eb77e11fecc37a04b67494e7 to before 2313ff69bd237aad264a5913907f374f958335a2, bce761d757452ba5eb77e11fecc37a04b67494e7 to before 2dc510957fe8fd098ab3c3147ebdf34d00cd2734, bce761d757452ba5eb77e11fecc37a04b67494e7 to before 53106e9262a310ef2c9a9321168c03705940c678, bce761d757452ba5eb77e11fecc37a04b67494e7 to before e743527c5bfdceda1095bc0a9e596e2aebb6a9c3
Linux
Linux · 6.8
Linux
Component: Not specified by the source
File: kernel/trace/ring_buffer.c
Attack conditions (Source advisory, CVSS 3.1): Local · Low privileges required · No user interaction required
What an attacker can do
The user can still re-allocate a new reader page and try again. Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high.
- Product
- linux
- CCR priority
- 31.2 /100 (P4)
- CVSS 3.1
- 7.8 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · Source advisory
- EPSS
- 0.00175 · percentile 0.06441 · 2026-10-10
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-10 21:26:32.650893+00:00 UTC
- GitHub Advisory Database · Source record · observed 2026-10-04 06:01:24.332572+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-04 05:55:03.931280+00:00 UTC
- OSV.dev · Source record · observed 2026-10-08 08:57:13.774521+00:00 UTC
- OSV.dev · Source record · observed 2026-10-04 13:35:46.972631+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-89503.html