In the Linux kernel, the following vulnerability has been resolved: USB: serial: keyspan: fix missing indat transfer sanity check Add the missing… (CVE-2026-63900)
A vulnerability in the Linux kernel's USB serial driver for Keyspan devices (usa49wg) was resolved by adding a missing sanity check on the size of incoming data transfers. This fix prevents the parsing of stale or uninitialized slab data, which could otherwise lead to undefined behavior.
AI Analysis
Technical Summary
The Linux kernel contained a vulnerability in the USB serial driver for Keyspan devices (usa49wg) due to a missing sanity check on the size of incoming data transfers (indat). Without this check, the driver could parse stale or uninitialized slab memory, potentially causing memory corruption or other unintended effects. This issue has been resolved by adding the appropriate sanity check to validate the size of the data transfers before processing.
Potential Impact
The vulnerability could allow the kernel to process uninitialized or stale memory data, which may lead to memory corruption or instability in the kernel's USB serial subsystem. No specific exploit or impact details are provided, and no known exploits are reported in the wild.
Mitigation Recommendations
A fix has been applied to the Linux kernel to add the missing sanity check. Users should update their Linux kernel to a version that includes this patch. Patch status is not explicitly confirmed in the provided data; therefore, check the official Linux kernel advisories or vendor updates for the exact fixed versions and apply the update accordingly.
In the Linux kernel, the following vulnerability has been resolved: USB: serial: keyspan: fix missing indat transfer sanity check Add the missing… (CVE-2026-63900)
Description
A vulnerability in the Linux kernel's USB serial driver for Keyspan devices (usa49wg) was resolved by adding a missing sanity check on the size of incoming data transfers. This fix prevents the parsing of stale or uninitialized slab data, which could otherwise lead to undefined behavior.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel contained a vulnerability in the USB serial driver for Keyspan devices (usa49wg) due to a missing sanity check on the size of incoming data transfers (indat). Without this check, the driver could parse stale or uninitialized slab memory, potentially causing memory corruption or other unintended effects. This issue has been resolved by adding the appropriate sanity check to validate the size of the data transfers before processing.
Potential Impact
The vulnerability could allow the kernel to process uninitialized or stale memory data, which may lead to memory corruption or instability in the kernel's USB serial subsystem. No specific exploit or impact details are provided, and no known exploits are reported in the wild.
Mitigation Recommendations
A fix has been applied to the Linux kernel to add the missing sanity check. Users should update their Linux kernel to a version that includes this patch. Patch status is not explicitly confirmed in the provided data; therefore, check the official Linux kernel advisories or vendor updates for the exact fixed versions and apply the update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-46q2-6xm2-q797
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-63900"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27ab2a4a8d598912f950
Added to database: 07/19/2026, 19:38:19 UTC
Last enriched: 07/19/2026, 20:10:32 UTC
Last updated: 07/20/2026, 17:26:47 UTC
Views: 11
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