CVE-2026-98528

In the Linux kernel, the following vulnerability has been resolved: gpio: cdev: fix kernel stack leak to user-space in error path If we fail to acquire the GPIO chip guard in gpio_desc_to_lineinfo(), we return immediately before zeroing the info struct we'll end up passing to the user-space later in lineinfo_get_v1(). This may leak the kernel stack contents. Make gpio_desc_to_lineinfo() return int so that the -ENODEV returned on failure to acquire the guard can be propagated to the callers. While not strictly necessary: move the memset() before trying to acquire the SRCU read lock too for good measure.

Status

Received - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-10-18

Last modified

2026-10-19

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/8460ee5216ab9a38263b01dca4b0a27e083f70f3
• https://git.kernel.org/stable/c/cf3d043582e106a0e57002bec8a6de8929ba3e1c
• https://git.kernel.org/stable/c/60a466f231905cd96ae6f0f3c44a710c97873dac
• https://git.kernel.org/stable/c/1feb5d39b05afd902ed9fc902ec5b15be03a4bdb