CVE-2025-68305

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : <=6.12.*, <69fcb0344bc0dd5b13d7e4e98f8b6bf25a6d4ff7, 6.6.94, <fe68510fc99bb4b88c9c611f83699749002d515a, 0, 6.12.34, 6fe26f694c824b8a4dbf50c635bee1302e3f099c, 6.18, 7b5958332f20dc66b19be564c402dbc21b927a81, <=6.6.*, bdd56875c6926d8009914f427df71797693e90d4, <6.6.119, d7882db79135c829a922daf3571f33ea1e056ae3, <e90c05fc5bbea956450a05cc3b36b8fa29cf195e, <89bb613511cc21ed5ba6bddc1c9b9ae9c0dad392, 6.16, <6.12.61, <6.16, 6.6.119, 6.17.11, 6.15.3, <=*, <=6.17.*, 4e83f2dbb2bf677e614109df24426c4dded472d4, <7344feaed3c8aa46d397984ae855e6026d3c3e95, 6.12.61

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sock: Prevent race in socket write iter and sock bind There is a potential race condition between sock bind and socket write iter. bind may free the same cmd via mgmt_pending before write iter sends the cmd, just as syzbot reported in UAF[1]. Here we use hci_dev_lock to synchronize the two, thereby avoiding the UAF mentioned in [1]. [1] syzbot reported: BUG: KASAN: slab-use-after-free in mgmt_pending_remove+0x3b/0x210 net/bluetooth/mgmt_util.c:316 Read of size 8 at addr ffff888077164818 by task syz.0.17/5989 Call Trace: mgmt_pending_remove+0x3b/0x210 net/bluetooth/mgmt_util.c:316 set_link_security+0x5c2/0x710 net/bluetooth/mgmt.c:1918 hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719 hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 sock_write_iter+0x279/0x360 net/socket.c:1195 Allocated by task 5989: mgmt_pending_add+0x35/0x140 net/bluetooth/mgmt_util.c:296 set_link_security+0x557/0x710 net/bluetooth/mgmt.c:1910 hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719 hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 sock_write_iter+0x279/0x360 net/socket.c:1195 Freed by task 5991: mgmt_pending_free net/bluetooth/mgmt_util.c:311 [inline] mgmt_pending_foreach+0x30d/0x380 net/bluetooth/mgmt_util.c:257 mgmt_index_removed+0x112/0x2f0 net/bluetooth/mgmt.c:9477 hci_sock_bind+0xbe9/0x1000 net/bluetooth/hci_sock.c:1314

Gravité et risque d'exploitation

CVE-2025-68305 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 0.19 %, ce qui la place devant 7.8 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.12.*, <69fcb0344bc0dd5b13d7e4e98f8b6bf25a6d4ff7, 6.6.94, <fe68510fc99bb4b88c9c611f83699749002d515a, 0, 6.12.34, 6fe26f694c824b8a4dbf50c635bee1302e3f099c, 6.18, 7b5958332f20dc66b19be564c402dbc21b927a81, <=6.6.*, bdd56875c6926d8009914f427df71797693e90d4, <6.6.119, d7882db79135c829a922daf3571f33ea1e056ae3, <e90c05fc5bbea956450a05cc3b36b8fa29cf195e, <89bb613511cc21ed5ba6bddc1c9b9ae9c0dad392, 6.16, <6.12.61, <6.16, 6.6.119, 6.17.11, 6.15.3, <=*, <=6.17.*, 4e83f2dbb2bf677e614109df24426c4dded472d4, <7344feaed3c8aa46d397984ae855e6026d3c3e95, 6.12.61) 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