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CVE-2026-43018

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt hci_conn lookup and field access must be covered by hdev lock in hci_le_remote_conn_param_req_evt, otherwise it's possible it is freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 95118dd4edfec950898a00180c6f998df0a6406d · fixed in 59eecf0ffde15670e6a5e10c47be67f73d843b20; From 95118dd4edfec950898a00180c6f998df0a6406d · fixed in 5fb69e1eeea9d6cba80517e9f058b56b34bc3a81; From 95118dd4edfec950898a00180c6f998df0a6406d · fixed in 7cadb03be37e761130edb153544fe0770a842b19; From 95118dd4edfec950898a00180c6f998df0a6406d · fixed in 1d0bdbfe3e91c11f0a704c52443a9446a10d699c; From 95118dd4edfec950898a00180c6f998df0a6406d · fixed in ea3cd36d7382d5f8309df04c275d20df139ed42c; From 95118dd4edfec950898a00180c6f998df0a6406d · fixed in b255531b27da336571411248c2a72a350662bd09

  • Linux Linux

    5.17

  • KernelLinux

    From 5.17.0 · fixed in 6.1.168; From 6.2.0 · fixed in 6.6.134; From 6.7.0 · fixed in 6.12.81; From 6.13.0 · fixed in 6.18.22; From 6.19.0 · fixed in 6.19.12

References 6

git.kernel.org