CVE-2026-90023
usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers() Previously fsg_num_buffers_validate() was removed as it was not necessary due to Kconfig setting the limits for n from 2 to 256 with default as 2. However, setting the page content in such a way that kstrtou8() reflects n value as either 0 or 1 bypasses these restrictions leading to a null pointer dereference if n is 0. Fix this by adding a check for n < 2 and returning -EINVAL if n is either 0 or 1 consistent with Kconfig logic.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 16, 2026 |
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Affected Versions
Linux / Linux
fe5a6c48fd954489f51aab151d5dad9254c76419 < 9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957 fe5a6c48fd954489f51aab151d5dad9254c76419 < b9b5b5df5b8dd3c1572ed267200276a44cc67d8e fe5a6c48fd954489f51aab151d5dad9254c76419 < 2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc
Linux / Linux
4.8