ring-buffer: Fix possible dereference of uninitialized pointer (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.16 % · percentile 5 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix possible dereference of uninitialized pointer There is a pointer head_page in rb_meta_validate_events() which is not initialized at the beginning of a function. This pointer can be dereferenced if there is a failure during reader page validation. In this case the control is passed to "invalid" label where the pointer is dereferenced in a loop. To fix the issue initialize orig_head and head_page before calling rb_validate_buffer. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-27671
- GCVE · GCVE-0-2026-43272
CERT-FR advisories
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.12 < 6.18.16cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 6.19.6
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 < a4afdff9c715af50cf6c3f2dc601932c2cea17a2 ; affected 5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 < bc77986f3cb7476637052edf2d87137fa39f153d ; affected 5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 < d9942396845fef2369478c157b26738fe07142f6 ; affected 5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 < f1547779402c4cd67755c33616b7203baa88420b |
| Linux · Linux | affected 6.12 ; unaffected 0 < 6.12 ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.16 ≤ 6.18.* ; unaffected 6.19.6 ≤ 6.19.* ; unaffected 7.0 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |