btrfs: fix reloc root cleanup in merge_reloc_roots() (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.13 % · centile 3 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
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Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix reloc root cleanup in merge_reloc_roots() If the root we got has zero root refs in its root item, we are resetting the root's ->reloc_root without using barriers like we do everywhere else. Sashiko complained about this while reviewing another patch, and it's correct (see the Link tag below). Also, we should not clear BTRFS_ROOT_DEAD_RELOC_TREE from the root unless the root points to the reloc root we have. Fix this by using clear_reloc_root(), which issues the memory barrier after setting the root's ->reloc_root to NULL and before clearing the bit BTRFS_ROOT_DEAD_RELOC_TREE from the root.
Références
- https://git.kernel.org/stable/c/29531470b1bf1e8bd2df4941fe913106edbca615
- https://git.kernel.org/stable/c/415f8665a969d3c906e4fd7c90fcbb4b357886f6
- https://git.kernel.org/stable/c/ee695a968aa73b1e67ccbf2133dc0e54381d32b2
- https://git.kernel.org/stable/c/0bc25f0a2d1b3e0a691431c4d7aef36afcd527c5
- https://git.kernel.org/stable/c/ab48583aa9948205ff9a6470e23dbff74c565e24
- https://git.kernel.org/stable/c/63d6b1f04cd91c825329712aa526215ffa5d11ca
- https://git.kernel.org/stable/c/b78fe9563e2d5ae47805f1e5dc722c91fd30e1f8
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-86185
- GCVE · GCVE-0-2026-93798
Avis du CERT-FR
- CERTFR-2026-AVI-1432 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected 1dae7e0e58b484eaa43d530f211098fdeeb0f404 < 29531470b1bf1e8bd2df4941fe913106edbca615 ; affected 1dae7e0e58b484eaa43d530f211098fdeeb0f404 < 415f8665a969d3c906e4fd7c90fcbb4b357886f6 ; affected 1dae7e0e58b484eaa43d530f211098fdeeb0f404 < ee695a968aa73b1e67ccbf2133dc0e54381d32b2 ; affected 1dae7e0e58b484eaa43d530f211098fdeeb0f404 < 0bc25f0a2d1b3e0a691431c4d7aef36afcd527c5 ; affected 1dae7e0e58b484eaa43d530f211098fdeeb0f404 < ab48583aa9948205ff9a6470e23dbff74c565e24 ; affected 1dae7e0e58b484eaa43d530f211098fdeeb0f404 < 63d6b1f04cd91c825329712aa526215ffa5d11ca |
| Linux · Linux | affected 5.8 ; unaffected 0 < 5.8 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* |
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 |