{"id":"AZL-101490","summary":"CVE-2026-90023 affecting package kernel 6.6.150.1-1","details":"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 \u003c 2 and returning -EINVAL if n is\neither 0 or 1 consistent with Kconfig logic.","modified":"2026-09-18T05:37:08Z","published":"2026-09-16T11:17:15Z","upstream":["CVE-2026-90023"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90023"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.150.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-101490.json"}}],"schema_version":"1.9.0"}