PT-2026-8215 · Nvidia+3 · Tegra210+3
Published
2026-01-01
·
Updated
2026-04-20
·
CVE-2026-23207
CVSS v3.1
4.7
Medium
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the Linux kernel's Tegra210-quad SPI driver related to synchronization of the
curr xfer variable within the interrupt request (IRQ) handler. Specifically, a race condition can occur when the interrupt service routine (ISR) thread and a timeout path concurrently access curr xfer. Without proper protection, the ISR thread might observe a non-NULL value for curr xfer, while the timeout path sets it to NULL. Subsequently, the handler functions (handle cpu based xfer() and handle dma based xfer()) could attempt to dereference a NULL pointer, leading to a system crash. The issue arises because the curr xfer check occurs before acquiring the spinlock, and the lock is released and reacquired later, creating a window for the race condition. The fix involves adding a NULL check within the handler functions after acquiring the lock to prevent dereferencing a NULL pointer if the timeout path has already cleared curr xfer.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
Race Condition
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Tegra210
Ubuntu