Answer in brief
CVE-2025-68305 records a Unknown severity vulnerability in Bluetooth: hci_sock: Prevent race in socket write iter and sock bind. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7b5958332f20dc66b19be564c402dbc21b927a81 <7344feaed3c8aa46d397984ae855e6026d3c3e95 || >=bdd56875c6926d8009914f427df71797693e90d4 <fe68510fc99bb4b88c9c611f83699749002d515a || >=4e83f2dbb2bf677e614109df24426c4dded472d4 <e90c05fc5bbea956450a05cc3b36b8fa29cf195e || >=6fe26f694c824b8a4dbf50c635bee1302e3f099c <69fcb0344bc0dd5b13d7e4e98f8b6bf25a6d4ff7 || >=6fe26f694c824b8a4dbf50c635bee1302e3f099c <89bb613511cc21ed5ba6bddc1c9b9ae9c0dad392 || d7882db79135c829a922daf3571f33ea1e056ae3 || >=6.6.94 <6.6.119 || >=6.12.34 <6.12.61 || >=6.15.3 <6.16 | 7344feaed3c8aa46d397984ae855e6026d3c3e95, fe68510fc99bb4b88c9c611f83699749002d515a, e90c05fc5bbea956450a05cc3b36b8fa29cf195e, 69fcb0344bc0dd5b13d7e4e98f8b6bf25a6d4ff7, 89bb613511cc21ed5ba6bddc1c9b9ae9c0dad392, 6.6.119, 6.12.61, 6.16 |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Dec 16, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 23, 2026
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
Quoted source text, attributed separately from HOL analysis.