CVE-2026-64128
Bluetooth: ISO: drop ISO_END frames received without prior ISO_START
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: drop ISO_END frames received without prior ISO_START ISO data PDUs carry a packet-boundary flag indicating START, CONT, END or SINGLE. The ISO_CONT branch of iso_recv() guards against a missing ISO_START by checking conn->rx_len before touching conn->rx_skb, but ISO_END does not. If a peer sends an ISO_END as the first packet on a fresh ISO connection, conn->rx_skb is still NULL and conn->rx_len is zero, so skb_put(conn->rx_skb, ...) dereferences NULL and oopses. For BIS, where receivers sync to a broadcaster without pairing, any broadcaster on the air can trigger this. Mirror the ISO_CONT check at the top of ISO_END so a stray end fragment is logged and dropped instead of crashing the host.
INFO
Published Date :
July 19, 2026, 4:17 p.m.
Last Modified :
July 19, 2026, 4:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64128
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel to the latest version.
- Apply the specific patch for the Bluetooth ISO vulnerability.
- Restart affected systems after applying the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64128.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64128 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64128
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64128 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64128 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ccf74f2390d60a2f9a75ef496d2564abb478f46a', 'lessThan': '1c3d1e1696b72579b970e17999c503a14535205b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ccf74f2390d60a2f9a75ef496d2564abb478f46a', 'lessThan': '3af41ee7ebecb0d5c8a504861f6cfad31345310f', 'versionType': 'git'}, {'status': 'affected', 'version': 'ccf74f2390d60a2f9a75ef496d2564abb478f46a', 'lessThan': '39f4a82e80c8f5ed2d6952d73fbafc895721a728', 'versionType': 'git'}, {'status': 'affected', 'version': 'ccf74f2390d60a2f9a75ef496d2564abb478f46a', 'lessThan': '61f2410a96dee808029e2ae4d6ef2dd635f3477f', 'versionType': 'git'}, {'status': 'affected', 'version': 'ccf74f2390d60a2f9a75ef496d2564abb478f46a', 'lessThan': 'e3a799881c12d27596232636a607e2e3fa448d63', 'versionType': 'git'}, {'status': 'affected', 'version': 'ccf74f2390d60a2f9a75ef496d2564abb478f46a', 'lessThan': '84c24fb151fc1179355296d7ff29129ac7c42129', 'versionType': 'git'}], 'programFiles': ['net/bluetooth/iso.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.175', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.142', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.92', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.34', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/bluetooth/iso.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: drop ISO_END frames received without prior ISO_START ISO data PDUs carry a packet-boundary flag indicating START, CONT, END or SINGLE. The ISO_CONT branch of iso_recv() guards against a missing ISO_START by checking conn->rx_len before touching conn->rx_skb, but ISO_END does not. If a peer sends an ISO_END as the first packet on a fresh ISO connection, conn->rx_skb is still NULL and conn->rx_len is zero, so skb_put(conn->rx_skb, ...) dereferences NULL and oopses. For BIS, where receivers sync to a broadcaster without pairing, any broadcaster on the air can trigger this. Mirror the ISO_CONT check at the top of ISO_END so a stray end fragment is logged and dropped instead of crashing the host. Added Reference https://git.kernel.org/stable/c/1c3d1e1696b72579b970e17999c503a14535205b Added Reference https://git.kernel.org/stable/c/39f4a82e80c8f5ed2d6952d73fbafc895721a728 Added Reference https://git.kernel.org/stable/c/3af41ee7ebecb0d5c8a504861f6cfad31345310f Added Reference https://git.kernel.org/stable/c/61f2410a96dee808029e2ae4d6ef2dd635f3477f Added Reference https://git.kernel.org/stable/c/84c24fb151fc1179355296d7ff29129ac7c42129 Added Reference https://git.kernel.org/stable/c/e3a799881c12d27596232636a607e2e3fa448d63