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  1. CVEs
  2. CVE-2021-41864
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CVE-2021-41864

high
  • Information
  • CPEs
  • Plugins

Description

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

References

https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=30e29a9a2bc6a4888335a6ede968b75cd329657a

https://github.com/torvalds/linux/commit/30e29a9a2bc6a4888335a6ede968b75cd329657a

https://lists.fedoraproject.org/archives/list/[email protected]/message/SYKURLXBB2555ASWMPDNMBUPD6AG2JKQ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/7BLLVKYAIETEORUPTFO3TR3C33ZPFXQM/

https://lists.fedoraproject.org/archives/list/[email protected]/message/LAT3RERO6QBKSPJBNNRWY3D4NCGTFOS7/

https://security.netapp.com/advisory/ntap-20211029-0004/

https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12

https://www.debian.org/security/2022/dsa-5096

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html

Details

Source: MITRE

Published: 2021-10-02

Updated: 2022-03-25

Type: CWE-190

Risk Information

CVSS v2

Base Score: 4.6

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

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