CVE-2026-46190
published 2026-05-28CVE-2026-46190: In the Linux kernel, the following vulnerability has been resolved: mtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show() Sashiko noticed an…
high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
In the Linux kernel, the following vulnerability has been resolved:
mtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show()
Sashiko noticed an out-of-bounds read [1].
In spi_nor_params_show(), the snor_f_names array is passed to
spi_nor_print_flags() using sizeof(snor_f_names).
Since snor_f_names is an array of pointers, sizeof() returns the total
number of bytes occupied by the pointers
(element_count * sizeof(void *))
rather than the element count itself. On 64-bit systems, this makes the
passed length 8x larger than intended.
Inside spi_nor_print_flags(), the 'names_len' argument is used to
bounds-check the 'names' array access. An out-of-bounds read occurs
if a flag bit is set that exceeds the array's actual element count
but is within the inflated byte-size count.
Correct this by using ARRAY_SIZE() to pass the actual number of
string pointers in the array.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 0257be79fc4a16a3252ce80aa13b3640f728c425 < 9a80c458320e0514e11945402dd6e48fcee05524 | 9a80c458320e0514e11945402dd6e48fcee05524 |
| linux | linux | >= 0257be79fc4a16a3252ce80aa13b3640f728c425 < ca18c180b053f6ce80394322b314ac721c316af7 | ca18c180b053f6ce80394322b314ac721c316af7 |
| linux | linux | >= 0257be79fc4a16a3252ce80aa13b3640f728c425 < 34bdcfb496b29f9a52431194f94473b37fb8c162 | 34bdcfb496b29f9a52431194f94473b37fb8c162 |
| linux | linux | >= 0257be79fc4a16a3252ce80aa13b3640f728c425 < c0b654bc0b76a1da102d9138be1ed1223bd99310 | c0b654bc0b76a1da102d9138be1ed1223bd99310 |
| linux | linux | >= 0257be79fc4a16a3252ce80aa13b3640f728c425 < e47029b977e747cb3a9174308fd55762cce70147 | e47029b977e747cb3a9174308fd55762cce70147 |
| linux | linux_kernel | — | — |