CVE-2026-45836: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb()
Published May 26, 2026
·Updated
Bluetooth: L2CAP: Fix null-ptr-deref in l2capsockgetsndtimeocb()
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>=3.13<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<6.12.90
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-2026-45836?
The severity of CVE-2026-45836 is rated at 27, indicating a potential risk level that should be addressed promptly.
2
How do I fix CVE-2026-45836?
To fix CVE-2026-45836, update your Linux kernel to the latest stable version where this vulnerability has been patched.
3
What type of vulnerability is CVE-2026-45836?
CVE-2026-45836 is a null pointer dereference vulnerability found in the Bluetooth L2CAP component of the Linux kernel.
4
What systems are affected by CVE-2026-45836?
CVE-2026-45836 affects systems running vulnerable versions of the Linux kernel that utilize Bluetooth L2CAP.
5
Is CVE-2026-45836 remotely exploitable?
CVE-2026-45836 is not known to be remotely exploitable, but could lead to application crashes in affected systems.