CVE-2026-46190High· 7.1▾ TwilightIn 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
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.
linux_kernel >= 5.19, < 6.6.140linux_kernel >= 6.7, < 6.12.88linux_kernel >= 6.13, < 6.18.30linux_kernel >= 6.19, < 7.0.7linux_kernel = 7.1Upgrade past the affected range:
linux_kernel 7.0.7Connected by shared product, vendor, weakness, or advisory.
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