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Vulnerability of Linux kernel: use after free via do_epoll_ctl

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via do_epoll_ctl() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Android OS, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this weakness: 2/4.
Creation date: 13/01/2021.
Références of this bulletin: CERTFR-2021-AVI-021, CERTFR-2021-AVI-035, CVE-2020-0466, openSUSE-SU-2021:0075-1, SUSE-SU-2021:0094-1, SUSE-SU-2021:0095-1, SUSE-SU-2021:0096-1, SUSE-SU-2021:0097-1, SUSE-SU-2021:0098-1, SUSE-SU-2021:0108-1, SUSE-SU-2021:0117-1, SUSE-SU-2021:0118-1, SUSE-SU-2021:0133-1, VIGILANCE-VUL-34302.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via do_epoll_ctl() of the...
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This security announce impacts software or systems such as Android OS, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this threat is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this computer vulnerability announce.

Solutions for this threat 

Patches for this vulnerability are not yet public.
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