HIGH 7.8 Microsoft

CVE-2025-21969

Bluetooth: L2CAP: Fix slab-use-after-free Read in l2cap_send_cmd

Microsoft Security Update 2026-Aug: Bluetooth: L2CAP: Fix slab-use-after-free Read in l2cap_send_cmd

Affected Products

cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0
cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0
cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
azl3 kernel 6.6.85.1-2 on Azure Linux 3.0
azl3 kernel 6.6.82.1-1 on Azure Linux 3.0
cbl2 kernel 5.15.202.1-1

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21969
https://nvd.nist.gov/vuln/detail/CVE-2025-21969

Published: 2026-08-06 · Source: Microsoft · Feed updated: 2026-08-10

This high severity vulnerability with a CVSS score of 7.8 was published on 2026-08-06 via Microsoft. Affected: cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0 and 3 more.

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