PT-2019-12802 · Linux+2 · Linux Kernel+2

Published 2019-05-30 · Updated 2026-03-13 · CVE-2019-12455

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 5.1.5

Description An issue was discovered in the sunxi divs clk setup function in drivers/clk/sunxi/clk-sunxi.c. There is an unchecked kstrndup of derived name, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash). However, it is disputed as not being an issue because the memory allocation that was not checked is part of a code that only runs at boot time, before user processes are started.

Recommendations For Linux kernel versions through 5.1.5, consider updating to a version where this issue is resolved, if available. As a temporary workaround, no specific mitigation measures are mentioned, but it is noted that the issue is disputed and may not be exploitable by unprivileged users. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2019-2024

ALT-PU-2019-2036

ALT-PU-2019-2120

ALT-PU-2019-2311

ALT-PU-2020-1198

ALT-PU-2020-1501

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

CVE-2019-12455

ECHO-7C7E-B6EB-69AF

Affected Products

Alt Linux

Debian

Linux Kernel

References · 16

• https://osv.dev/vulnerability/CVE-2019-12455 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-12455 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-12455 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2019-12455 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git/commit/?h=sunxi/clk-for-5.3&id=fcdf445ff42f036d22178b49cf64e92d527c1330 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2019-12455 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-12455 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-12455 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J36BIJTKEPUOZKJNHQBUZA47RQONUKOI · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-12455 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-12455 · Vendor Advisory
• https://mail-archive.com/[e-mail]/msg2010240.html · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fcdf445ff42f036d22178b49cf64e92d527c1330 · Note
• https://security.netapp.com/advisory/ntap-20190710-0002 · Note
• https://t.me/cvenotify/89079 · Telegram Post