CVE-2026-98528
gpio: cdev: fix kernel stack leak to user-space in error path
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 18, 2026 |
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Affected Versions
Linux / Linux
d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 < 8460ee5216ab9a38263b01dca4b0a27e083f70f3 d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 < cf3d043582e106a0e57002bec8a6de8929ba3e1c d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 < 60a466f231905cd96ae6f0f3c44a710c97873dac d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 < 1feb5d39b05afd902ed9fc902ec5b15be03a4bdb
Linux / Linux
6.9
References
git.kernel.org: https://git.kernel.org/stable/c/8460ee5216ab9a38263b01dca4b0a27e083f70f3 git.kernel.org: https://git.kernel.org/stable/c/cf3d043582e106a0e57002bec8a6de8929ba3e1c git.kernel.org: https://git.kernel.org/stable/c/60a466f231905cd96ae6f0f3c44a710c97873dac git.kernel.org: https://git.kernel.org/stable/c/1feb5d39b05afd902ed9fc902ec5b15be03a4bdb