CVE-2021-47055

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

5.5 (MEDIUM) מקור הציון: NVD CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — סבירות ניצול

0% (אחוזון 000) נכון ל-5/8/2026

CWE

CWE-667

מוצרים מושפעים

linux: linux kernel

קישורים

• https://git.kernel.org/stable/c/077259f5e777c3c8821f6b41dee709fcda27306b Patch
• https://git.kernel.org/stable/c/1e97743fd180981bef5f01402342bb54bf1c6366 Patch
• https://git.kernel.org/stable/c/5880afefe0cb9b2d5e801816acd58bfe91a96981 Patch
• https://git.kernel.org/stable/c/75ed985bd6c8ac1d4e673e93ea9d96c9908c1d37 Patch
• https://git.kernel.org/stable/c/7b6552719c0ccbbea29dde4be141da54fdb5877e Patch
• https://git.kernel.org/stable/c/9625b00cac6630479c0ff4b9fafa88bee636e1f0 Patch
• https://git.kernel.org/stable/c/a08799d3e8c8088640956237c183f83463c39668 Patch
• https://git.kernel.org/stable/c/f4d28d8b9b0e7c4ae04214b8d7e0b0466ec6bcaf Patch
• https://git.kernel.org/stable/c/f73b29819c6314c0ba8b7d5892dfb03487424bee Patch
• https://git.kernel.org/stable/c/077259f5e777c3c8821f6b41dee709fcda27306b Patch