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VulnerabilityPublished Updated

CVE-2026-64144: Linux kernel · Bluetooth: btmtk: fix urb->setup_packet leak in error paths

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in ecd8d2531766641958a667829907204066cfb51a : update Linux kernel when convenient.

Data as of 30 Oct 2026, 13:33 UTC

Severity
Low

Rated Low by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
Patch
Available – fixed in ecd8d2531766641958a667829907204066cfb51a, dd1dda6b8d6e1f4376a5b3055a04f0ecbdb4d6bd, a0f5268c77eb73f84ba7c210ddfc54b1c73ff80c +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ a1c49c434e15050b5dafe3b6f5cc732d4f02d657, < ecd8d2531766641958a667829907204066cfb51a
Fixed in
  • ecd8d2531766641958a667829907204066cfb51a
LinuxLinuxAffected
  • ≥ a1c49c434e15050b5dafe3b6f5cc732d4f02d657, < dd1dda6b8d6e1f4376a5b3055a04f0ecbdb4d6bd
Fixed in
  • dd1dda6b8d6e1f4376a5b3055a04f0ecbdb4d6bd
LinuxLinuxAffected
  • ≥ a1c49c434e15050b5dafe3b6f5cc732d4f02d657, < a0f5268c77eb73f84ba7c210ddfc54b1c73ff80c
Fixed in
  • a0f5268c77eb73f84ba7c210ddfc54b1c73ff80c
LinuxLinuxAffected
  • ≥ a1c49c434e15050b5dafe3b6f5cc732d4f02d657, < 68c027c2003b0a8a1439d0301c59c6fd1eb3b844
Fixed in
  • 68c027c2003b0a8a1439d0301c59c6fd1eb3b844
LinuxLinuxAffected
  • ≥ a1c49c434e15050b5dafe3b6f5cc732d4f02d657, < 2a1905730e0c771b999906a7b509722f795563c6
Fixed in
  • 2a1905730e0c771b999906a7b509722f795563c6
LinuxLinuxAffected
  • ≥ a1c49c434e15050b5dafe3b6f5cc732d4f02d657, < 0d2572bafea33c7cd1d77c6a25f25ff31a432482
Fixed in
  • 0d2572bafea33c7cd1d77c6a25f25ff31a432482

AI-suggested

A fix is available and has been applied in the Linux kernel source code commits referenced. Users should update their Linux kernel to a version including these fixes to remediate the issue.

Description

A memory leak vulnerability in the Linux kernel Bluetooth driver btmtk was fixed. The issue involved the setup_packet of a control urb not being freed in certain error paths, specifically when usb_submit_urb fails or when the submitted urb is killed. This could lead to resource leaks affecting system stability.

References

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