CVE-2021-41864

Published on: 10/01/2021 12:00:00 AM UTC

Last Modified on: 10/29/2021 01:15:00 PM UTC

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

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

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel through 5.14.9 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

  • CVE-2021-41864 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: 4.6 - MEDIUM

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

CVE References

Description Tags Link
kernel/git/bpf/bpf.git - BPF kernel tree git.kernel.org
text/html
URL Logo MISC git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=30e29a9a2bc6a4888335a6ede968b75cd329657a
bpf: Fix integer overflow in prealloc_elems_and_freelist() · torvalds/[email protected] · GitHub github.com
text/html
URL Logo MISC github.com/torvalds/linux/commit/30e29a9a2bc6a4888335a6ede968b75cd329657a
CVE-2021-41864 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security security.netapp.com
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URL Logo CONFIRM security.netapp.com/advisory/ntap-20211029-0004/
[SECURITY] Fedora 33 Update: kernel-5.14.10-100.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-9dd76a1ed0
[SECURITY] Fedora 34 Update: kernel-5.14.10-200.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-ffda3d6fa1
[SECURITY] Fedora 35 Update: kernel-5.14.10-300.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-79cbbefebe

Related QID Numbers

  • 198567 Ubuntu Security Notification for Linux kernel (OEM 5.14) Vulnerabilities (USN-5140-1)
  • 198569 Ubuntu Security Notification for Linux kernel (OEM 5.10) Vulnerabilities (USN-5139-1)
  • 281972 Fedora Security Update for kernel (FEDORA-2021-ffda3d6fa1)
  • 281973 Fedora Security Update for kernel (FEDORA-2021-9dd76a1ed0)
  • 352869 Amazon Linux Security Advisory for kernel: ALAS2-2021-1719
  • 751336 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1460-1)
  • 751342 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3641-1)
  • 751346 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3655-1)
  • 751349 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1477-1)
  • 751353 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3675-1)
  • 751381 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3748-1)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
LinuxLinux KernelAllAllAllAll
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-41864 : prealloc_elems_and_freelist in #kernel/bpf/stackmap.c in the #Linux kernel through 5.14.9 allows u… twitter.com/i/web/status/1… 2021-10-02 00:09:14
Twitter Icon @LinInfoSec Git - CVE-2021-41864: git.kernel.org/pub/scm/linux/… 2021-10-02 06:15:17
Twitter Icon @threatmeter CVE-2021-41864 prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel through 5.14.9 allows unpri… twitter.com/i/web/status/1… 2021-10-03 07:09:45
Twitter Icon @omokazuki SIOSセキュリティブログを更新しました。 Linux Kernelの脆弱性(CVE-2021-41864) #sios_tech #security #vulnerability #セキュリティ #脆弱性 #linux… twitter.com/i/web/status/1… 2021-10-03 18:30:00
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