CVE-2026-90023
CVE CVE-2026-90023EUVD EUVD-2026-80631Published 2026-09-16T10:33:26.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux fe5a6c48fd954489f51aab151d5dad9254c76419 <b9b5b5df5b8dd3c1572ed267200276a44cc67d8e; patch: 7.2.5; 4.8; patch: 6.18.52; fe5a6c48fd954489f51aab151d5dad9254c76419 <9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957; patch: 7.3-rc2; fe5a6c48fd954489f51aab151d5dad9254c76419 <2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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