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Linux kernel: use after free via __blk_drain_queue
Synthesis of the vulnerability
An attacker can force the usage of a freed memory area via __blk_drain_queue() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Impacted products: Debian, Linux, Slackware, Ubuntu.
Severity of this bulletin: 2/4.
Consequences of an intrusion: administrator access/rights, denial of service on server.
Hacker's origin: user shell.
Creation date: 14/08/2019.
Références of this threat: CERTFR-2019-AVI-391, CERTFR-2019-AVI-392, CVE-2018-20856, DLA-1885-1, DSA-4497-1, SSA:2019-226-01, USN-4094-1, VIGILANCE-VUL-30051.
Description of the vulnerability
An attacker can force the usage of a freed memory area via __blk_drain_queue() o...
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