CVE-2026-45834
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb() Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb().
Affected versions
Linux kernel versions
3.1
and later are affected. Fixed in
5.10.258,
5.15.209,
6.1.175,
6.6.140,
6.12.88,
6.18.30,
7.0.7,
7.1-rc3
and their respective stable series.
References
The following references provide additional information about CVE-2026-45834 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/0c17c8832562b2aac288e89cefd0f46074f54bcb
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PatchKernel patch commithttps://git.kernel.org/stable/c/1810e42ff6716f320c7269d5850eca48b07b7427
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PatchKernel patch commithttps://git.kernel.org/stable/c/1b1c0da227bf63479bac9982fc8d12df9aaea0fb
Frequently asked questions
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What is CVE-2026-45834?
CVE-2026-45834 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.1 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-45834 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-45834?
Yes — CVE-2026-45834 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 3.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-45834 actively exploited?
No — CVE-2026-45834 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.