CVE-2026-45834: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()
Published May 26, 2026
·Updated
Bluetooth: L2CAP: Fix null-ptr-deref in l2capsockstatechangecb()
Affected Software
11 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.139.1-1<6.6.141.1-1
6.6.141.1-1
Linux Linux kernel>=3.1<5.10.258
Linux Linux kernel>=5.11<5.15.209
Linux Linux kernel>=5.16<6.1.175
Linux Linux kernel>=6.2<6.6.140
Linux Linux kernel>=6.7<6.12.88
Linux Linux kernel>=6.13<6.18.30
Linux Linux kernel>=6.19<7.0.7
Linux Linux kernel=7.1-rc1
Linux Linux kernel=7.1-rc2
Remediation
Event History
May 26, 2026
CVE Published
via MITRE·04:14 PM
Data Sourced
via MITRE·04:14 PM
Description
Data Sourced
via NVD·05:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
May 28, 2026
Data Sourced
via Microsoft·08:05 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:05 AM
Affected Software
Updated
via Microsoft·08:05 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2026-45834?
The severity of CVE-2026-45834 is rated at 15, indicating a critical risk level.
2
How do I fix CVE-2026-45834?
To fix CVE-2026-45834, update the Linux kernel to the latest version where this vulnerability has been patched.
3
What does CVE-2026-45834 affect?
CVE-2026-45834 affects the Bluetooth L2CAP functionality in the Linux kernel.
4
What is the impact of CVE-2026-45834?
The impact of CVE-2026-45834 can lead to a null pointer dereference in the L2CAP socket state change, which may cause system crashes.
5
When was CVE-2026-45834 published?
CVE-2026-45834 was published on May 26, 2026.