CVE-2021-47276

Katalog CVE

CVSS 5.5 · Medium EPSS 0,24%

Kerentanan Use of Incorrectly-Resolved Name or Reference pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: ftrace: Do not blindly read the ip address in ftrace_bug() It was reported that a bug on arm64 caused a bad ip address to be used for updating into a nop in ftrace_init(), but the error path (rightfully) returned -EINVAL and not -EFAULT, as the bug caused more than one error to occur. But because -EINVAL was returned, the ftrace_bug() tried to report what was at the location of the ip address, and read it directly. This caused the machine to panic, as the ip was not pointing to a valid memory address. Instead, read the ip address with copy_from_kernel_nofault() to safely access the memory, and if it faults, report that the address faulted, otherwise report what was in that location.

Rincian

Terbit di NVD

21 Mei 2024

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-706: Use of Incorrectly-Resolved Name or Reference

EPSS (30 hari)

0,24% peluang dieksploitasi; lebih tinggi dari 13,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0bc62e398bbd9e600959e610def5109957437b28 patch
• https://git.kernel.org/stable/c/3e4ddeb68751fb4fb657199aed9cfd5d02796875 patch
• https://git.kernel.org/stable/c/4aedc2bc2b32c93555f47c95610efb89cc1ec09b patch
• https://git.kernel.org/stable/c/6c14133d2d3f768e0a35128faac8aa6ed4815051 patch
• https://git.kernel.org/stable/c/7e4e824b109f1d41ccf223fbb0565d877d6223a2 patch
• https://git.kernel.org/stable/c/862dcc14f2803c556bdd73b43c27b023fafce2fb patch
• https://git.kernel.org/stable/c/97524384762c1fb9b3ded931498dd2047bd0de81 patch
• https://git.kernel.org/stable/c/acf671ba79c1feccc3ec7cfdcffead4efcec49e7 patch