PT-2024-11118 · Linux+1 · Linux Kernel+1

Michael Pavone · Published 2021-04-06 · Updated 2025-01-09 · CVE-2021-47016

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 (affected versions not specified)

Description The issue is related to the Linux kernel, where the timer 1 configuration bits are cleared when clearing the interrupt flag and counter overflow on mvme147 and mvme16x systems. This results in no timer interrupts being delivered after the first, causing initialization to hang in calibrate delay as the jiffies counter is not updated. The problem is resolved by not wiping the PCC timer config bits and enabling the timer after requesting the irq on mvme16x, consistent with mvme147.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-06542

CVE-2021-47016

Affected Products

Astra Linux

Linux Kernel

References · 25

• https://git.kernel.org/stable/c/43262178c043032e7c42d00de44c818ba05f9967 · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-47016 · Vendor Advisory
• https://git.kernel.org/stable/c/73fdeb612d25b5e105c219e05434285a45d23576 · Patch
• https://ubuntu.com/security/CVE-2021-47016 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47016 · Vendor Advisory
• https://git.kernel.org/stable/c/1dfb26df15fc7036a74221d43de7427f74293dae · Patch
• https://git.kernel.org/stable/c/f6a90818a32058fca62cda3a2027a6a2364e1878 · Patch
• https://cve.org/CVERecord?id=CVE-2021-47016 · Security Note
• https://git.kernel.org/stable/c/5d34225169346cab5145978d153b9ce90e9ace21 · Patch
• https://bdu.fstec.ru/vul/2025-06542 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47016 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47016 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47016 · Vendor Advisory
• https://git.kernel.org/linus/43262178c043032e7c42d00de44c818ba05f9967 · Note
• https://t.me/cvenotify/106978 · Telegram Post