{"id":"CVE-2026-90023","published":"2026-09-16T11:17:15.250","lastModified":"2026-09-16T11:17:15.250","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers()\n\nPreviously fsg_num_buffers_validate() was removed as it was not\nnecessary due to Kconfig setting the limits for n from 2 to 256 with\ndefault as 2. However, setting the page content in such a way that\nkstrtou8() reflects n value as either 0 or 1 bypasses these\nrestrictions leading to a null pointer dereference if n is 0. Fix\nthis by adding a check for n < 2 and returning -EINVAL if n is\neither 0 or 1 consistent with Kconfig logic.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc","tags":[]},{"url":"https://git.kernel.org/stable/c/9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957","tags":[]},{"url":"https://git.kernel.org/stable/c/b9b5b5df5b8dd3c1572ed267200276a44cc67d8e","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}