01 Record

CVE-2026-23146

Bluetooth: hci_uart: fix null-ptr-deref in hci_uart_write_work

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

Bluetooth: hci_uart: fix null-ptr-deref in hci_uart_write_work

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 ImpactpartialSuccessful exploitation gives limited 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

0.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 2.8% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

Modified. 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

2026-02-14 16:01Z8 MO AGO

Last updated

2026-10-19 18:25Z10 DAYS AGO

Reserved

2026-01-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

439545f59aeeddb245f3fb23402dbae4e5757de5ec45ee90e789eaa65d640b3c

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxa40f94f7caa8d3421b64f63ac31bc0f24c890f39 to < b0a900939e7e4866d9b90e9112514b72c451e873, 9e5a0f5777162e503400c70c6ed25fbbe2d38799 to < ccc683f597ceb28deb966427ae948e5ac739a909, 80f14e9de6a43a0bd8194cad1003a3e6dcbc3984 to < 937a573423ce5a96fdb1fd425dc6b8d8d4ab5779, 02e1bcdfdf769974e7e9fa285e295cd9852e2a38 to < 186d147cf7689ba1f9b3ddb753ab634a84940cc9, 281782d2c6730241e300d630bb9f200d831ede71 to < 53e54cb31e667fca05b1808b990eac0807d1dab0, 5df5dafc171b90d0b8d51547a82657cd5a1986c7 to < 03e8c90c62233382042b7bd0fa8b8900552fdb62, 5df5dafc171b90d0b8d51547a82657cd5a1986c7 to < 0c3cd7a0b862c37acbee6d9502107146cc944398, 1dcf08fcff5ca529de6dc0395091f28854f4e54a, 8e5aff600539e5faea294d9612cca50220e602b8, db7509fa110dd9b11134b75894677f30353b2c51, 5.10.237 to < 5.10.249, 5.15.181 to < 5.15.199, 6.1.135 to < 6.1.162, 6.6.88 to < 6.6.123, 6.12.24 to < 6.12.69, 5.4.293 to < 5.5, 6.13.12 to < 6.14, 6.14.3 to < 6.15, 6.15—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/b0a900939e7e4866d9b90e9112514b72c451e873
git.kernel.orghttps://git.kernel.org/stable/c/ccc683f597ceb28deb966427ae948e5ac739a909
git.kernel.orghttps://git.kernel.org/stable/c/937a573423ce5a96fdb1fd425dc6b8d8d4ab5779
git.kernel.orghttps://git.kernel.org/stable/c/186d147cf7689ba1f9b3ddb753ab634a84940cc9
git.kernel.orghttps://git.kernel.org/stable/c/53e54cb31e667fca05b1808b990eac0807d1dab0
git.kernel.orghttps://git.kernel.org/stable/c/03e8c90c62233382042b7bd0fa8b8900552fdb62
git.kernel.orghttps://git.kernel.org/stable/c/0c3cd7a0b862c37acbee6d9502107146cc944398

07 Fixed in

Debian 12

linux
Fixed in 6.1.162-1

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

Debian 13

linux
Fixed in 6.12.69-1

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

Debian 14

linux
Fixed in 6.18.9-1

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