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17 April 2021

Vulnerabilities first published on this day (UTC), newest first.

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All Critical High Medium Low Exploited only Public exploit

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  • High 8.8
    CVE-2021-3492 Public exploit

    Ubuntu linux kernel shiftfs file system double free vulnerability

    Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could u…

    Ubuntu Linux kernel linux-raspi2 linux-hwe Linux Ubuntu
  • High 8.8
    CVE-2021-3493 Exploited Public exploit EPSS 49%

    The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting …

    Ubuntu Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu
    KEV Oct 20, 2022