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CVE-2026-68301

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : 6.13, <=6.1.*, <=6.12.*, 1100242709d5644856131a9dd25d32672ebe7357, 6.12.101, <21d48408479a17eb65568a765930adea37e4d804, 1a8a63a5305e95519de6f941922dfcd8179f82e5, <6.6.148, <5.15.216, 0, <6.13, <=7.1.*, <79ff0547676acdeceda445c3fce4071b0a887b70, 5.15.216, <b5ded444621b6180df9f3d4e07045fc1fc1e8cd9, <f72c312af6c7897ab0f8a2b5a63f917a207a4143, a2accc07bdcfb0c7ab2cacdca6a1fe8267816efa, 5.15.194, <6.12.101, <=6.6.*, 6.18.42, 6.6.107, 7.1.6, c707d2c5541d2bb94131968ad5dfeb06427a1dba, <6.1.183, 6.1.183, 6.1.153, <=6.18.*, 72dbae1f2f2159395089405c6c54632f2613f1be, 6.12.48, <=*, <ae995b8002d3af134560a706c0e111a89e26317c, <=5.15.*, <ccc822e9e4f09a6c2ca73ad5334570441947f94f, 6.6.148, 7.2, <dcf15eaf5641812f1cfc5e96537380132a7da89d

Description

In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix memory leak on slave unregistration by removing synced VLANs When an HSR master device is brought UP, it auto-adds VLAN 0 via vlan_vid0_add(), which propagates VID 0 to its slave devices (slave A and B). If a slave device is later unregistered while HSR is active (e.g., during netns cleanup or interface destruction), hsr_del_port() is called to detach the slave port from the HSR master. However, hsr_del_port() currently does not delete the VLAN IDs that were synced to the slave device by HSR. As a result, the slave device retains a refcount on VID 0 (and any other synced VLANs). When the slave device is destroyed, its vlan_info / vlan_vid_info structure remains allocated, leading to a memory leak. Fix this by calling vlan_vids_del_by_dev(port->dev, master->dev) in hsr_del_port() before unlinking slave A or slave B ports, matching the propagation logic in hsr_ndo_vlan_rx_add_vid() / hsr_ndo_vlan_rx_kill_vid() and the cleanup behavior in bonding and team drivers.

Gravité et risque d'exploitation

CVE-2026-68301 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.17 %, ce qui la place devant 6.3 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions 6.13, <=6.1.*, <=6.12.*, 1100242709d5644856131a9dd25d32672ebe7357, 6.12.101, <21d48408479a17eb65568a765930adea37e4d804, 1a8a63a5305e95519de6f941922dfcd8179f82e5, <6.6.148, <5.15.216, 0, <6.13, <=7.1.*, <79ff0547676acdeceda445c3fce4071b0a887b70, 5.15.216, <b5ded444621b6180df9f3d4e07045fc1fc1e8cd9, <f72c312af6c7897ab0f8a2b5a63f917a207a4143, a2accc07bdcfb0c7ab2cacdca6a1fe8267816efa, 5.15.194, <6.12.101, <=6.6.*, 6.18.42, 6.6.107, 7.1.6, c707d2c5541d2bb94131968ad5dfeb06427a1dba, <6.1.183, 6.1.183, 6.1.153, <=6.18.*, 72dbae1f2f2159395089405c6c54632f2613f1be, 6.12.48, <=*, <ae995b8002d3af134560a706c0e111a89e26317c, <=5.15.*, <ccc822e9e4f09a6c2ca73ad5334570441947f94f, 6.6.148, 7.2, <dcf15eaf5641812f1cfc5e96537380132a7da89d) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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