PT-2019-4479 · Linux+2 · Linux Kernel+2

Syzbot · Published 2019-08-05 · Updated 2022-10-31 · CVE-2019-19531

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.2.9

Description The issue is related to a use-after-free bug in the Linux kernel, specifically in the drivers/usb/misc/yurex.c driver. This bug can be triggered by a malicious USB device, potentially allowing an attacker to cause a denial of service or elevate their privileges.

Recommendations For Linux kernel versions prior to 5.2.9, update to version 5.2.9 or later to resolve the issue. As a temporary workaround, consider disabling the use of the drivers/usb/misc/yurex.c driver until a patch is available. Restrict access to USB devices to minimize the risk of exploitation.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2019-2487

ALT-PU-2019-2488

ALT-PU-2019-2655

ALT-PU-2019-2746

ALT-PU-2020-1198

ALT-PU-2020-1501

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

BDU:2020-00297

CVE-2019-19531

DLA-2068-1

DLA-2114-1

OPENSUSE-SU-2019:2675-1

OPENSUSE-SU-2019_2675-1

SUSE-SU-2019:3289-1

SUSE-SU-2019:3316-1

SUSE-SU-2019:3317-1

SUSE-SU-2019:3372-1

SUSE-SU-2019:3379-1

SUSE-SU-2019:3381-1

SUSE-SU-2019:3389-1

SUSE-SU-2020:0093-1

SUSE-SU-2020:0584-1

SUSE-SU-2020:0599-1

SUSE-SU-2020:0613-1

SUSE-SU-2020:1255-1

SUSE-SU-2020:14354-1

Affected Products

Alt Linux

Linux Kernel

Suse

References · 752

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fc05481b2fcabaaeccf63e32ac1baab54e5b6963 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:2675-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.9 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-00297 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-19531 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2020:1255-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:0599-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-19531 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-19531 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19531 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2114-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:14354-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2068-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-19531 · Security Note