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PRIOn knowledge basePRION:CVE-2021-21781HistoryAug 18, 2021 - 3:15 p.m.
Information disclosure
2021-08-1815:15:00
PRIOn knowledge base
www.prio-n.com
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An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11
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