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UBUNTU-CVE-2021-47227

🗓️ 21 May 2024 15:15:00Reported by GoogleType 
osv
 osv🔗 osv.dev👁 2 Views

Linux kernel x86 fpu restore fixes XSAVE buffer corruption via copy_user_to_xstate with header validation for non compacted data.

Related
Refs
ReporterTitlePublishedViews
Family
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-002 (ALASKERNEL-5.10-2022-002)
2 May 202200:00
–nessus
Tenable Nessus		SUSE SLES15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2024:2185-1)
25 Jun 202400:00
–nessus
Tenable Nessus		TencentOS Server 4: kernel (TSSA-2024:0981)
16 Jun 202500:00
–nessus
Tenable Nessus		Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986769)
7 Oct 202500:00
–nessus
Tenable Nessus		Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989287)
5 Nov 202500:00
–nessus
Tenable Nessus		Linux Distros Unpatched Vulnerability : CVE-2021-47227
5 Mar 202500:00
–nessus
Amazon		Important: kernel
28 Jan 202200:00
–amazon
AstraLinux		Astra Linux – Vulnerability in Linux 5.10
20 May 202605:53
–astralinux
BDU FSTEC		The vulnerability of the __fpu__restore_sig() function in the arch/x86/kernel/fpu/signal.c module, which supports Linux’s x86 kernel-based operating system, allows a hacker to trigger a service failure.
1 Apr 202500:00
–bdu_fstec
CNNVD		Linux kernel 安全漏洞
21 May 202400:00
–cnnvd
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24 Oct 2025 04:51Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.15.5
EPSS0.00235
linux kernelx86 fpuxsave bufferheader validationcopy_user_to_xstatenon compacted
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