PT-2024-11274 · Linux · Linux Kernel

Li Jun · Published 2021-06-04 · Updated 2024-12-26 · CVE-2021-47268

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel version 5.13.0-rc4-00927-gebbe9dbd802c-dirty #36

Description A vulnerability in the Linux kernel has been resolved. The issue involves a pending hrtimer that may expire after the kthread worker of a tcpm port is destroyed. This can lead to a kernel paging request error and buffer I/O errors. The fix involves canceling the two hrtimers when unregistering the tcpm port.

Recommendations To resolve this issue, update the Linux kernel to a version that includes the fix for this vulnerability. Specifically, for Linux kernel version 5.13.0-rc4-00927-gebbe9dbd802c-dirty #36, update to a newer version that includes the patch for this issue.

Fix

Weakness Enumeration

CWE-19

Related Identifiers

BDU:2025-07319

CVE-2021-47268

Affected Products

Linux Kernel

References · 18

• https://cve.org/CVERecord?id=CVE-2021-47268 · Security Note
• https://git.kernel.org/stable/c/d0a06696a8a4d99f649240b6f9b8a2e55452ecf5 · Patch
• https://bdu.fstec.ru/vul/2025-07319 · Security Note
• https://git.kernel.org/stable/c/18eaf0de50eadeeb395b83310b259b21ad8ed0a6 · Patch
• https://git.kernel.org/stable/c/3a13ff7ef4349d70d1d18378d661117dd5af8efe · Patch
• https://osv.dev/vulnerability/CVE-2021-47268 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47268 · Security Note
• https://ubuntu.com/security/CVE-2021-47268 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-47268 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47268 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47268 · Vendor Advisory
• https://twitter.com/CVEnew/status/1792928026591744001 · Twitter Post
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.44 · Note
• https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1&id=18eaf0de50eadeeb395b83310b259b21ad8ed0a6 · Note
• https://git.kernel.org/linus/3a13ff7ef4349d70d1d18378d661117dd5af8efe · Note