CVE-2021-47055 — mtd: require write permissions for locking and badblock ioctls
In the Linux kernel, the following vulnerability has been resolved: mtd: require write permissions for locking and badblock ioctls MEMLOCK, MEMUNLOCK and OTPLOCK modify protec…
Published: 2024-02-29 · CVSS: 7.1 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: mtd: require write permissions for locking and badblock ioctls MEMLOCK, MEMUNLOCK and OTPLOCK modify protection bits. Thus require write permission. Depending on the hardware MEMLOCK might even be write-once, e.g. for SPI-NOR flashes with their WP# tied to GND. OTPLOCK is always write-once. MEMSETBADBLOCK modifies the bad block table.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7