CVE-2020-36791

Katalog CVE

CVSS 7.1 · High EPSS 0,20%

Kerentanan Out-of-bounds Read pada linux kernel. Skor CVSS 3.1 7.1 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: net_sched: keep alloc_hash updated after hash allocation In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access. cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash().

Rincian

Terbit di NVD

7 Mei 2025

Terakhir diubah

4 Agustus 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read

EPSS (30 hari)

0,20% peluang dieksploitasi; lebih tinggi dari 9,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0d1c3530e1bd38382edef72591b78e877e0edcd3 patch
• https://git.kernel.org/stable/c/557d015ffb27b672e24e6ad141fd887783871dc2 patch
• https://git.kernel.org/stable/c/9f8b6c44be178c2498a00b270872a6e30e7c8266 patch
• https://git.kernel.org/stable/c/bd3ee8fb6371b45c71c9345cc359b94da2ddefa9 patch
• https://git.kernel.org/stable/c/c4453d2833671e3a9f6bd52f0f581056c3736386 patch
• https://git.kernel.org/stable/c/d23faf32e577922b6da20bf3740625c1105381bf patch
• https://git.kernel.org/stable/c/d6cdc5bb19b595486fb2e6661e5138d73a57f454 patch
• https://blog.cdthoughts.ch/2021/03/16/syzbot-bug.html advisory pihak ketiga
• https://syzkaller.appspot.com/bug?id=ea260693da894e7b078d18fca2c9c0a19b457534 issue tracking