Heimdall Security Logo

CVE-2025-21744

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.3%
Linux•Linux•Versions : <4e51d6d093e763348916e69d06d87e0a5593661b, <=6.1.*, <=6.12.*, <2326e19190e176fd72bb542b837a9d2b7fcb8693, 7f00ee2bbc630900ba16fc2690473f3e2db0e264, <61541d9b5a23df33934fcc620a3a81f246b1b240, 0, 4.7.10, 6faa698c35a43b9e74ea24e90fe37471d08d00d0, <3877fc67bd3d5566cc12763bce39710ceb74a97d, <fbbfef2a5b858eab55741a58b2ac9a0cc8d53c58, <59ff4fa653ff6db07c61152516ffba79c2a74bda, 6.14, <=5.10.*, <=6.6.*, 6.6.78, 6.1.129, <=5.4.*, 6.13.3, 5.4.291, <4.9, 5.15.179, 6.12.14, <a2beefc4fa49ebc22e664dc6b39dbd054f8488f9, <=*, 4.9, <=5.15.*, <68abd0c4ebf24cd499841a488b97a6873d5efabb, <4.8, 9119232cc92a269d7860b4aa51f07d3923a3cc10, 5.10.235, <=6.13.*, 4.8.4

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: fix NULL pointer dereference in brcmf_txfinalize() On removal of the device or unloading of the kernel module a potential NULL pointer dereference occurs. The following sequence deletes the interface: brcmf_detach() brcmf_remove_interface() brcmf_del_if() Inside the brcmf_del_if() function the drvr->if2bss[ifidx] is updated to BRCMF_BSSIDX_INVALID (-1) if the bsscfgidx matches. After brcmf_remove_interface() call the brcmf_proto_detach() function is called providing the following sequence: brcmf_detach() brcmf_proto_detach() brcmf_proto_msgbuf_detach() brcmf_flowring_detach() brcmf_msgbuf_delete_flowring() brcmf_msgbuf_remove_flowring() brcmf_flowring_delete() brcmf_get_ifp() brcmf_txfinalize() Since brcmf_get_ip() can and actually will return NULL in this case the call to brcmf_txfinalize() will result in a NULL pointer dereference inside brcmf_txfinalize() when trying to update ifp->ndev->stats.tx_errors. This will only happen if a flowring still has an skb. Although the NULL pointer dereference has only been seen when trying to update the tx statistic, all other uses of the ifp pointer have been guarded as well with an early return if ifp is NULL.

Gravité et risque d'exploitation

CVE-2025-21744 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 0.25 %, ce qui la place devant 16.0 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <4e51d6d093e763348916e69d06d87e0a5593661b, <=6.1.*, <=6.12.*, <2326e19190e176fd72bb542b837a9d2b7fcb8693, 7f00ee2bbc630900ba16fc2690473f3e2db0e264, <61541d9b5a23df33934fcc620a3a81f246b1b240, 0, 4.7.10, 6faa698c35a43b9e74ea24e90fe37471d08d00d0, <3877fc67bd3d5566cc12763bce39710ceb74a97d, <fbbfef2a5b858eab55741a58b2ac9a0cc8d53c58, <59ff4fa653ff6db07c61152516ffba79c2a74bda, 6.14, <=5.10.*, <=6.6.*, 6.6.78, 6.1.129, <=5.4.*, 6.13.3, 5.4.291, <4.9, 5.15.179, 6.12.14, <a2beefc4fa49ebc22e664dc6b39dbd054f8488f9, <=*, 4.9, <=5.15.*, <68abd0c4ebf24cd499841a488b97a6873d5efabb, <4.8, 9119232cc92a269d7860b4aa51f07d3923a3cc10, 5.10.235, <=6.13.*, 4.8.4) 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