What’s Vulnerable › Vulnerabilities

CVE-2026-45836: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-26 · updated 2026-10-15
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb() Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb().

Affected products

• Linux kernel: from 3.13 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.90; from 6.13 before 6.18.30 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.90, 6.18.30, 6.6.140

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.90. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/32bd343803d4ba47cc516f9d5f037f01b855d767
• https://git.kernel.org/stable/c/58dc5e3d8768e121907608e6e196a908512fb083
• https://git.kernel.org/stable/c/6e8d1a2a677a81caa60cf0aabd4217bd585fbba1
• https://git.kernel.org/stable/c/78a88d43dab8d23aeef934ed8ce34d40e6b3d613
• https://git.kernel.org/stable/c/a93d66907dd4d29b65c9797a93784bf61906d6d6
• https://git.kernel.org/stable/c/cf1fd517f892ded88168df878f834b625133f86d
• https://git.kernel.org/stable/c/e1863e7480feddb90125d0dd5a1b572972d75908
• https://git.kernel.org/stable/c/fd072f833147b0bc10c43a454624cb99d02f3fc7
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html

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