Heimdall Security Logo

CVE-2026-90284

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : <=6.1.*, <=6.12.*, 5.15.221, 75d95e2e39b27f733f21e6668af1c9893a97de5e, d09639528b66b5c7c20dc8f7fb8928aacabd40bb, <93a2385730540105df8524447dcc11309ad280f9, 67cf0fbcac0d42d4d4686cddc1e39f465bbfec37, 5.13.10, 0, 5.10.270, c14a54675db7131791402fa22fb0fa6da1f5fb66, 6.1.188, 6.18.52, <5.14, <ea33fac0df7fe7b49a4b27acb83e227b82317d1d, <4.20, <c8b97c5130f27b64fa2cfe1aa4bebb13f724c6c7, <6eaa632d0ed7bbb84f9cb670e5ec4e2cecf4cc7b, <=5.10.*, <=6.6.*, 5.4.140, 5.14, <b48373c901951fad1a26bd7c33ad91172b3945b5, 6.6.157, 7.2.6, <5.5, <=6.18.*, <5.10.270, 7.3, <fb4824880b0dba0e7b3a497c46c642f979630392, 6.12.110, <=7.2.*, <5a250bff75a446374c05622973b18b4ab662b504, <=*, <=5.15.*, <85aeb8fc61839098ae0942ccba86e669c08e75d4, 5.10.58, 4.19.203, ecb739cf15a9bae040ce6b60209b78b92512d120

Description

In the Linux kernel, the following vulnerability has been resolved: firmware_loader: do not queue completed sysfs fallback requests fw_load_sysfs_fallback() calls device_add() before adding the fw_priv to pending_fw_head. device_add() publishes the fallback loading interface, so a userspace helper which discovers the device by scanning sysfs can write 0 to the loading attribute and complete the request before it is queued as pending. In that interleaving firmware_loading_store() calls fw_state_done() while pending_list still points to itself, so it cannot remove an entry from pending_fw_head. The subsequent unconditional list_add() then queues an already-completed fw_priv. Once the request is released, pending_fw_head can retain a pointer to freed memory and the next fallback request can fault while validating the list. Only in-flight fallback requests need suspend or reboot abort handling. If the request is already DONE after device_add(), return success from the fallback path without sending another uevent, waiting again, or queueing it as pending. This preserves the invariant that pending_fw_head contains only active fallback requests.

Gravité et risque d'exploitation

CVE-2026-90284 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 0.21 %, ce qui la place devant 10.6 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, <=6.12.*, 5.15.221, 75d95e2e39b27f733f21e6668af1c9893a97de5e, d09639528b66b5c7c20dc8f7fb8928aacabd40bb, <93a2385730540105df8524447dcc11309ad280f9, 67cf0fbcac0d42d4d4686cddc1e39f465bbfec37, 5.13.10, 0, 5.10.270, c14a54675db7131791402fa22fb0fa6da1f5fb66, 6.1.188, 6.18.52, <5.14, <ea33fac0df7fe7b49a4b27acb83e227b82317d1d, <4.20, <c8b97c5130f27b64fa2cfe1aa4bebb13f724c6c7, <6eaa632d0ed7bbb84f9cb670e5ec4e2cecf4cc7b, <=5.10.*, <=6.6.*, 5.4.140, 5.14, <b48373c901951fad1a26bd7c33ad91172b3945b5, 6.6.157, 7.2.6, <5.5, <=6.18.*, <5.10.270, 7.3, <fb4824880b0dba0e7b3a497c46c642f979630392, 6.12.110, <=7.2.*, <5a250bff75a446374c05622973b18b4ab662b504, <=*, <=5.15.*, <85aeb8fc61839098ae0942ccba86e669c08e75d4, 5.10.58, 4.19.203, ecb739cf15a9bae040ce6b60209b78b92512d120) 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

Rechercher une autre CVE