UBUNTU-CVE-2021-47040

🗓️ 28 Feb 2024 09:15:00Reported by GoogleType

osv

osv🔗 osv.dev👁 4 Views

Linux kernel io_uring fix: proper overflow checks in provide buffers and unsigned io_provide_buf.len.

Reporter	Title	Published	Views	Family All 28
Tenable Nessus	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-002 (ALASKERNEL-5.10-2022-002)	2 May 202200:00	–	nessus
Tenable Nessus	EulerOS 2.0 SP10 : kernel (EulerOS-SA-2024-1570)	9 May 202400:00	–	nessus
Tenable Nessus	EulerOS Virtualization 2.10.1 : kernel (EulerOS-SA-2024-2002)	18 Jul 202400:00	–	nessus
Tenable Nessus	RHEL 6 : kernel (Unpatched Vulnerability)	11 May 202400:00	–	nessus
Tenable Nessus	RHEL 7 : kernel (Unpatched Vulnerability)	11 May 202400:00	–	nessus
Tenable Nessus	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007221)	17 Apr 202600:00	–	nessus
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2021-47040	15 Aug 202500:00	–	nessus
Amazon	Important: kernel	28 Jan 202200:00	–	amazon
BDU FSTEC	The vulnerability of the `io_provide_buffers_prep()` function in the Linux operating system allows a hacker to compromise the confidentiality, integrity, and accessibility of data.	4 Mar 202400:00	–	bdu_fstec
Circl	CVE-2021-47040	28 Feb 202410:26	–	circl

Source	Link
ubuntu	www.ubuntu.com/security/CVE-2021-47040
git	www.git.kernel.org/linus/38134ada0ceea3e848fe993263c0ff6207fd46e7
git	www.git.kernel.org/stable/c/cbbc13b115b8f18e0a714d89f87fbdc499acfe2d
git	www.git.kernel.org/stable/c/51bf90901952aaac564bbdb36b2b503050c53dd9
git	www.git.kernel.org/stable/c/84b8c266c4bfe9ed5128e13253c388deb74b1b03
git	www.git.kernel.org/stable/c/38134ada0ceea3e848fe993263c0ff6207fd46e7
cve	www.cve.org/CVERecord

24 Oct 2025 04:51Current

6.3Medium risk

Vulners AI Score6.3

CVSS 3.17.8

EPSS0.0026

linux kernel io_uring provide buffers overflow sign extension unsigned length