01 Record

CVE-2026-46111

Bluetooth: hci_conn: fix potential UAF in create_big_sync

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

Bluetooth: hci_conn: fix potential UAF in create_big_sync

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 5.0% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Undergoing Analysis. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-05-28 09:35Z5 MO AGO

Last updated

2026-10-19 19:26Z9 DAYS AGO

Reserved

2026-05-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

dea0fe4a2f14afa9c72ec464d49524fbecec29fe51e67f8203d18da3cde08aff

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxeca0ae4aea66914515e5e3098ea051b518ee5316 to < d41093723e47255d7d74df86e2736711c1b8486e, eca0ae4aea66914515e5e3098ea051b518ee5316 to < 6823f730bf195fc296d9edd09e2ca94bc1ff5584, eca0ae4aea66914515e5e3098ea051b518ee5316 to < 1750a2df0eab61dc421a7afae74abdd239a44b85, eca0ae4aea66914515e5e3098ea051b518ee5316 to < dc34f8d8240f25dd137dc2758ebbcc75e3779142, eca0ae4aea66914515e5e3098ea051b518ee5316 to < f8eaf92c57ad99358dd372580d5ff87623343a72, eca0ae4aea66914515e5e3098ea051b518ee5316 to < 0beddb0c380bed5f5b8e61ddbe14635bb73d0b41, 6.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/d41093723e47255d7d74df86e2736711c1b8486e
git.kernel.orghttps://git.kernel.org/stable/c/6823f730bf195fc296d9edd09e2ca94bc1ff5584
git.kernel.orghttps://git.kernel.org/stable/c/1750a2df0eab61dc421a7afae74abdd239a44b85
git.kernel.orghttps://git.kernel.org/stable/c/dc34f8d8240f25dd137dc2758ebbcc75e3779142
git.kernel.orghttps://git.kernel.org/stable/c/f8eaf92c57ad99358dd372580d5ff87623343a72
git.kernel.orghttps://git.kernel.org/stable/c/0beddb0c380bed5f5b8e61ddbe14635bb73d0b41

07 Fixed in

Debian 12

linux
Fixed in 6.1.187-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.90-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.0.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.