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Vulnerability of Linux kernel: NULL pointer dereference via btrfs_verify_dev_extents

Synthesis of the vulnerability

An attacker can force a NULL pointer to be dereferenced via btrfs_verify_dev_extents() of the Linux kernel, in order to trigger a denial of service.
Severity of this computer vulnerability: 1/4.
Creation date: 15/11/2019.
Références of this announce: CVE-2019-18885, VIGILANCE-VUL-30886.

Description of the vulnerability

An attacker can force a NULL pointer to be dereferenced via btrfs_verify_dev_extents() of the Linux kernel, in order to trigger a denial of service.
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This threat alert impacts software or systems such as Linux.

Our Vigil@nce team determined that the severity of this computer vulnerability bulletin is low.

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 weakness note.

Solutions for this threat

Linux kernel: patch for btrfs_verify_dev_extents.
A patch is indicated in information sources.
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