CVE-2021-41073

Published on: 09/19/2021 12:00:00 AM UTC

Last Modified on: 10/14/2021 09:15:00 AM UTC

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Certain versions of Debian Linux from Debian contain the following vulnerability:

loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.

  • CVE-2021-41073 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7.8 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 7.2 - HIGH

Access
Vector
Access
Complexity
Authentication
LOCAL LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
COMPLETE COMPLETE COMPLETE

CVE References

Description Tags Link
[SECURITY] Fedora 33 Update: kernel-headers-5.14.9-100.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-e0d6215753
JavaScript is not available. nitter.domain.glass
text/html
URL Logo MISC twitter.com/HenkPoley/status/1439877969548390400
CVE-2021-41073 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security security.netapp.com
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URL Logo CONFIRM security.netapp.com/advisory/ntap-20211014-0003/
kernel/git/torvalds/linux.git - Linux kernel source tree git.kernel.org
text/html
URL Logo MISC git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16c8d2df7ec0eed31b7d3b61cb13206a7fb930cc
[SECURITY] Fedora 34 Update: kernel-tools-5.14.9-200.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-884d245ef8
oss-security - Linux Kernel: Exploitable vulnerability in io_uring www.openwall.com
text/html
URL Logo MISC www.openwall.com/lists/oss-security/2021/09/18/2
Debian -- Security Information -- DSA-4978-1 linux www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-4978

Related QID Numbers

  • 178809 Debian Security Update for linux (DSA 4978-1)
  • 198515 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5092-1)
  • 198523 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5092-2)
  • 198524 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5096-1)
  • 198533 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5106-1)
  • 281950 Fedora Security Update for kernel (FEDORA-2021-884d245ef8)
  • 281956 Fedora Security Update for kernel (FEDORA-2021-e0d6215753)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
DebianDebian Linux10.0AllAllAll
Operating
System
LinuxLinux KernelAllAllAllAll
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-41073 : loop_rw_iter in fs/io_uring.c in the #Linux #kernel through 5.14.6 allows local users to gain priv… twitter.com/i/web/status/1… 2021-09-19 16:44:38
Twitter Icon @LinInfoSec Git - CVE-2021-41073: openwall.com/lists/oss-secu… 2021-09-19 19:13:28
Twitter Icon @0_exploit CVE-2021-41073 dlvr.it/S7t6NN 2021-09-19 19:54:02
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