CVE-2020-27171

Katalog CVE

CVSS 6.0 · Medium EPSS 0,58%

Kerentanan Off-by-one Error pada linux kernel, fedoraproject fedora +2 lainnya. Skor CVSS 3.1 6.0 (Medium) menurut NVD.

Deskripsi (NVD)

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-10d2bb2e6b1d.

Rincian

Terbit di NVD

20 Maret 2021

Terakhir diubah

8 Oktober 2026

Status NVD

Modified

CVSS 3.1

6.0 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-193: Off-by-one Error

EPSS (30 hari)

0,58% peluang dieksploitasi; lebih tinggi dari 46,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.8 patch · advisory vendor
• https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/patch/?id=10d2bb2e6b1d8c4576c56a748f697dbeb8388899 patch · advisory vendor
• https://www.openwall.com/lists/oss-security/2021/03/19/3 mailing list · patch · advisory pihak ketiga
• http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html advisory pihak ketiga · vdb entry
• http://www.openwall.com/lists/oss-security/2021/03/24/5 mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html mailing list · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FB6LUXPEIRLZH...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRTPQE73ANG7D...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQ...