CVE-2021-47240

Katalog CVE

CVSS 7.1 · High EPSS 0,24%

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: qrtr: fix OOB Read in qrtr_endpoint_post Syzbot reported slab-out-of-bounds Read in qrtr_endpoint_post. The problem was in wrong _size_ type: if (len != ALIGN(size, 4) + hdrlen) goto err; If size from qrtr_hdr is 4294967293 (0xfffffffd), the result of ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293 in header this check won't fail and skb_put_data(skb, data + hdrlen, size); will read out of bound from data, which is hdrlen allocated block.

Rincian

Terbit di NVD

21 Mei 2024

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)

0,24% peluang dieksploitasi; lebih tinggi dari 14,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe patch
• https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f patch
• https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 patch
• https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d patch
• https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 patch