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NVD / CVE Program· CNA Linux

CVE-2025-68305: Bluetooth: hci_sock: Prevent race in socket write iter and sock bind

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 6.12.61, 6.16, 6.6.119.

Low priority for now. Upgrade to Linux Linux 6.12.61, 6.16, 6.6.119 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

—No exploit Fix available
Published
Dec 16, 2025
Updated
Oct 14, 2026
EPSS
0.1% · 8th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • d7882db79135c829a922daf3571f33ea1e056ae3, 6.16affected
    • 7b5958332f20dc66b19be564c402dbc21b927a81 and later · before 7344feaed3c8aa46d397984ae855e6026d3c3e95affected · git
    • bdd56875c6926d8009914f427df71797693e90d4 and later · before fe68510fc99bb4b88c9c611f83699749002d515aaffected · git
    • 4e83f2dbb2bf677e614109df24426c4dded472d4 and later · before e90c05fc5bbea956450a05cc3b36b8fa29cf195eaffected · git
    • 6fe26f694c824b8a4dbf50c635bee1302e3f099c and later · before 69fcb0344bc0dd5b13d7e4e98f8b6bf25a6d4ff7affected · git
    • 6fe26f694c824b8a4dbf50c635bee1302e3f099c and later · before 89bb613511cc21ed5ba6bddc1c9b9ae9c0dad392affected · git
    • 6.6.94 and later · before 6.6.119affected · semver
    • 6.12.34 and later · before 6.12.61affected · semver
    • 6.15.3 and later · before 6.16affected · semver
    • before 6.16not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-124.31.1.el10_16.12.0-124.31.1.el10_1
AlmaLinux:10kernel-docbefore 6.12.0-124.31.1.el10_16.12.0-124.31.1.el10_1
AlmaLinux:9kernelbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64kbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debugbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-develbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-cross-headersbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-debugbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-debug-corebefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-debug-develbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-611.26.1.el9_75.14.0-611.26.1.el9_7

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-68303Dec 16, 2025 · platform/x86: intel: punit_ipc: fix memory corruption
    31Monitor
  • ← EarlierCVE-2025-68304Dec 16, 2025 · Bluetooth: hci_core: lookup hci_conn on RX path on protocol side
    35Monitor
  • Later →CVE-2025-68306Dec 16, 2025 · Bluetooth: btusb: mediatek: Fix kernel crash when releasing mtk iso interface
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux6.12.61Vendor (CNA)
Linux Linux6.16Vendor (CNA)
Linux Linux6.6.119Vendor (CNA)
Linux Linux69fcb0344bc0dd5b13d7e4e98f8b6bf25a6d4ff7Vendor (CNA)
Linux Linux7344feaed3c8aa46d397984ae855e6026d3c3e95Vendor (CNA)
Linux Linux89bb613511cc21ed5ba6bddc1c9b9ae9c0dad392Vendor (CNA)
Linux Linuxe90c05fc5bbea956450a05cc3b36b8fa29cf195eVendor (CNA)
Linux Linuxfe68510fc99bb4b88c9c611f83699749002d515aVendor (CNA)
almalinux:kernel5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel-matched5.14.0-611.26.1.el9_7 · AlmaLinux:9Package registry (OSV)
debian:linux6.12.63-1 · Debian:13Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-611.26.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

+4

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records