CVE-2026-64483
ALSA: firewire: isight: bound the sample count to the packet payload
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire: isight: bound the sample count to the packet payload isight_packet() takes the frame count from the device iso packet and checks it only against the device claimed iso length. count = be32_to_cpu(payload->sample_count); if (likely(count <= (length - 16) / 4)) isight_samples(isight, payload->samples, count); length is the iso header data_length. It can be up to 0xffff. So the gate allows a count up to about 16379. isight_samples() then copies count frames out of payload->samples into the PCM DMA buffer. payload->samples holds only 2 * MAX_FRAMES_PER_PACKET values. The device multiplexes two samples per frame. A count past MAX_FRAMES_PER_PACKET reads past the payload. A count past the buffer size writes past runtime->dma_area. The smallest PCM buffer is larger than MAX_FRAMES_PER_PACKET. Bounding the count to MAX_FRAMES_PER_PACKET keeps both the read and the write in range. A malicious or faulty Apple iSight on the FireWire bus reaches this during a normal capture. Add the MAX_FRAMES_PER_PACKET bound to the gate.
INFO
Published Date :
July 25, 2026, 10:17 a.m.
Last Modified :
July 25, 2026, 10:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64483
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 resolved version.
- Apply the provided patch to the kernel source.
- Recompile and install the updated kernel.
- Reboot the system with the new kernel.
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-2026-64483.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64483 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-2026-64483
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-2026-64483 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64483 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. 25, 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': '3a691b28a0ca3cf4d9010c6158318159e0275d2c', 'lessThan': '24423e0a9251d348c3f1fb0bb0e61b879e1e976c', 'versionType': 'git'}, {'status': 'affected', 'version': '3a691b28a0ca3cf4d9010c6158318159e0275d2c', 'lessThan': 'ebbffacda6733dcbcef601b5b523460f8d8b671e', 'versionType': 'git'}, {'status': 'affected', 'version': '3a691b28a0ca3cf4d9010c6158318159e0275d2c', 'lessThan': '57e4d9043afc1eaddee8f50d11def6e65415d273', 'versionType': 'git'}, {'status': 'affected', 'version': '3a691b28a0ca3cf4d9010c6158318159e0275d2c', 'lessThan': '3ed2fa1ed8cc65f910b8bbc0be3cc366b30f8478', 'versionType': 'git'}, {'status': 'affected', 'version': '3a691b28a0ca3cf4d9010c6158318159e0275d2c', 'lessThan': '31da82b9676c6b112e7c72c7529e6812b919742a', 'versionType': 'git'}, {'status': 'affected', 'version': '3a691b28a0ca3cf4d9010c6158318159e0275d2c', 'lessThan': '8e48a29813df8dd71503800b7acf69c12c035045', 'versionType': 'git'}, {'status': 'affected', 'version': '3a691b28a0ca3cf4d9010c6158318159e0275d2c', 'lessThan': '31a01b70bb90e3ef3147f308e2ea899e1d2485ca', 'versionType': 'git'}, {'status': 'affected', 'version': '3a691b28a0ca3cf4d9010c6158318159e0275d2c', 'lessThan': '29b9667982e4df2ed7744f86b1144f8bb58eb698', 'versionType': 'git'}], 'programFiles': ['sound/firewire/isight.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/firewire/isight.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire: isight: bound the sample count to the packet payload isight_packet() takes the frame count from the device iso packet and checks it only against the device claimed iso length. count = be32_to_cpu(payload->sample_count); if (likely(count <= (length - 16) / 4)) isight_samples(isight, payload->samples, count); length is the iso header data_length. It can be up to 0xffff. So the gate allows a count up to about 16379. isight_samples() then copies count frames out of payload->samples into the PCM DMA buffer. payload->samples holds only 2 * MAX_FRAMES_PER_PACKET values. The device multiplexes two samples per frame. A count past MAX_FRAMES_PER_PACKET reads past the payload. A count past the buffer size writes past runtime->dma_area. The smallest PCM buffer is larger than MAX_FRAMES_PER_PACKET. Bounding the count to MAX_FRAMES_PER_PACKET keeps both the read and the write in range. A malicious or faulty Apple iSight on the FireWire bus reaches this during a normal capture. Add the MAX_FRAMES_PER_PACKET bound to the gate. Added Reference https://git.kernel.org/stable/c/24423e0a9251d348c3f1fb0bb0e61b879e1e976c Added Reference https://git.kernel.org/stable/c/29b9667982e4df2ed7744f86b1144f8bb58eb698 Added Reference https://git.kernel.org/stable/c/31a01b70bb90e3ef3147f308e2ea899e1d2485ca Added Reference https://git.kernel.org/stable/c/31da82b9676c6b112e7c72c7529e6812b919742a Added Reference https://git.kernel.org/stable/c/3ed2fa1ed8cc65f910b8bbc0be3cc366b30f8478 Added Reference https://git.kernel.org/stable/c/57e4d9043afc1eaddee8f50d11def6e65415d273 Added Reference https://git.kernel.org/stable/c/8e48a29813df8dd71503800b7acf69c12c035045 Added Reference https://git.kernel.org/stable/c/ebbffacda6733dcbcef601b5b523460f8d8b671e