Vigil@nce - Linux kernel: memory corruption via perf_mmap_close
January 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
– Impacted products: Debian, Linux, openSUSE Leap, SUSE Linux
Enterprise Desktop, SLES, Ubuntu.
– Severity: 2/4.
– Consequences: administrator access/rights, denial of service on
server.
– Provenance: user shell.
– Confidence: confirmed by the editor (5/5).
– Creation date: 04/11/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can trigger a memory corruption via perf_mmap_close()
of the Linux kernel, in order to trigger a denial of service, and
possibly to run code.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Linux-kernel-memory-corruption-via-perf-mmap-close-33803