Answer in brief
CVE-2026-90023 records a Unknown severity vulnerability in usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fe5a6c48fd954489f51aab151d5dad9254c76419 <51cc9af4f2d3f0b765266aced66b9b532b423b13 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <b9b5b5df5b8dd3c1572ed267200276a44cc67d8e || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc | 51cc9af4f2d3f0b765266aced66b9b532b423b13, 9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957, b9b5b5df5b8dd3c1572ed267200276a44cc67d8e, 2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc |
| Linux/Linuxgeneric | 4.8 | Not reported |
| Linux/Linuxgeneric | >=fe5a6c48fd954489f51aab151d5dad9254c76419 <9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <b9b5b5df5b8dd3c1572ed267200276a44cc67d8e || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc | 9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957, b9b5b5df5b8dd3c1572ed267200276a44cc67d8e, 2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc |
| Linux/Linuxgeneric | >=fe5a6c48fd954489f51aab151d5dad9254c76419 <f4f0fe3ab47ed57ee4974fdd3e9dccb7839a7ebf || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <51cc9af4f2d3f0b765266aced66b9b532b423b13 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <b9b5b5df5b8dd3c1572ed267200276a44cc67d8e || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc | f4f0fe3ab47ed57ee4974fdd3e9dccb7839a7ebf, 51cc9af4f2d3f0b765266aced66b9b532b423b13, 9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957, b9b5b5df5b8dd3c1572ed267200276a44cc67d8e, 2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc |
| Linux/Linuxgeneric | >=fe5a6c48fd954489f51aab151d5dad9254c76419 <38edd187a37db0d8e4bf84cc954dbdbe7bfa366f || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <e54820b9dc1d6d731ecc3e51462445dc952906a7 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <5d56dbaeb81d5cd967cdee8ddcc70814b7139246 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <f4f0fe3ab47ed57ee4974fdd3e9dccb7839a7ebf || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <51cc9af4f2d3f0b765266aced66b9b532b423b13 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957 || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <b9b5b5df5b8dd3c1572ed267200276a44cc67d8e || >=fe5a6c48fd954489f51aab151d5dad9254c76419 <2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc | 38edd187a37db0d8e4bf84cc954dbdbe7bfa366f, e54820b9dc1d6d731ecc3e51462445dc952906a7, 5d56dbaeb81d5cd967cdee8ddcc70814b7139246, f4f0fe3ab47ed57ee4974fdd3e9dccb7839a7ebf, 51cc9af4f2d3f0b765266aced66b9b532b423b13, 9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957, b9b5b5df5b8dd3c1572ed267200276a44cc67d8e, 2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
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.
Quoted source text, attributed separately from HOL analysis.