VulnerabilityPublished 3 Jul 2025Updated 5 Nov 2026

CVE-2025-38128: Linux kernel · Bluetooth: MGMT: reject malformed HCI_CMD_SYNC commands

Affects Linux kernelSource CVE Database V5

Not known to be exploited : upgrade to 9eeafd16d76a7642d12b3442a26c15cd345e12f7 or 03f1700b9b4d4f2fed3165370f3c23db76553178 when convenient.

Data as of 5 Nov 2026, 21:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in 9eeafd16d76a7642d12b3442a26c15cd345e12f7, 03f1700b9b4d4f2fed3165370f3c23db76553178

Exploitation evidence

Disclosed: evidence found.
CVE published 3 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to 9eeafd16d76a7642d12b3442a26c15cd345e12f7 or 03f1700b9b4d4f2fed3165370f3c23db76553178.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 827af4787e74e8df9e8e0677a69fbb15e0856d2f, < 9eeafd16d76a7642d12b3442a26c15cd345e12f7	Fixed in 9eeafd16d76a7642d12b3442a26c15cd345e12f7
LinuxLinux	Affected ≥ 827af4787e74e8df9e8e0677a69fbb15e0856d2f, < 03f1700b9b4d4f2fed3165370f3c23db76553178	Fixed in 03f1700b9b4d4f2fed3165370f3c23db76553178
LinuxLinux	Affected =6.13	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: reject malformed HCI_CMD_SYNC commands In 'mgmt_hci_cmd_sync()', check whether the size of parameters passed in 'struct mgmt_cp_hci_cmd_sync' matches the total size of the data (i.e. 'sizeof(struct mgmt_cp_hci_cmd_sync)' plus trailing bytes). Otherwise, large invalid 'params_len' will cause 'hci_cmd_sync_alloc()' to do 'skb_put_data()' from an area beyond the one actually passed to 'mgmt_hci_cmd_sync()'.

References

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