Use-after-free in Linux kernel - CVE-2019-19543

Vulnerability identifier: #VU30561

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-19543

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local authenticated user to execute arbitrary code.

In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c.

Linux kernel
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
kernel (Red Hat package)

Install update from vendor's website.

Linux kernel - update to 5.1.6
kernel (Red Hat package) - update to 4.18.0-240.el8

• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.6
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=56cd26b618855c9af48c8301aa6754ced8dd0beb

• Multiple vulnerabilities in Linux kernel
• Red Hat Enterprise Linux 8 update for kernel