> CVE-2022-50766

« BACK_TO_HOME
PUBLISHED
2025-12-24 13:16
MODIFIED
2025-12-24 13:16
EPSS (Prob. Exploit)
0.24%
Top 85.1%
DATA SOURCES:
NVD 🔗 2025-12-24 RED HAT 🔗 2025-12-28 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08 OSV 🔗 2026-11-08

> DESCRIPTION

In the Linux kernel, the following vulnerability has been resolved: btrfs: set generation before calling btrfs_clean_tree_block in btrfs_init_new_buffer syzbot is reporting uninit-value in btrfs_clean_tree_block() [1], for commit bc877d285ca3dba2 ("btrfs: Deduplicate extent_buffer init code") missed that btrfs_set_header_generation() in btrfs_init_new_buffer() must not be moved to after clean_tree_block() because clean_tree_block() is calling btrfs_header_generation() since commit 55c69072d6bd5be1 ("Btrfs: Fix extent_buffer usage when nodesize != leafsize"). Since memzero_extent_buffer() will reset "struct btrfs_header" part, we can't move btrfs_set_header_generation() to before memzero_extent_buffer(). Just re-add btrfs_set_header_generation() before btrfs_clean_tree_block().

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Low

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

btrfs: set generation before calling btrfs_clean_tree_block in btrfs_init_new_buffer

AFFECTED PACKAGES:
Unknown / Unknown
Linux / Kernel

> HISTORIQUE DES MODIFICATIONS

Première apparition
24/12/2025 13:16
Source: NVD
📊 ENRICHISSEMENT 19/01/2026 17:38
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 28/12/2025 04:02
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 23:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 22:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 21:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 20:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 19:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 18:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 17:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 16:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 15:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 14:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 13:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 12:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 25/12/2025 12:30
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 15 Dernière mise à jour: 9 months ago

> REFERENCES

https://git.kernel.org/stable/c/0a408c6212c16b9a2a1141d3c531247582ef8101
https://git.kernel.org/stable/c/89bc41c92d10b905c60f6ec13c9ef664a3555c54
https://git.kernel.org/stable/c/a687c2890fe4a2acaac6941fa4097a1264d8f3eb
https://git.kernel.org/stable/c/cbddcc4fa3443fe8cfb2ff8e210deb1f6a0eea38
« BACK_TO_HOME