CVE-2021-47152

Katalog CVE

CVSS 5.5 · Medium EPSS 0,24%

Kerentanan Out-of-bounds Write pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix data stream corruption Maxim reported several issues when forcing a TCP transparent proxy to use the MPTCP protocol for the inbound connections. He also provided a clean reproducer. The problem boils down to 'mptcp_frag_can_collapse_to()' assuming that only MPTCP will use the given page_frag. If others - e.g. the plain TCP protocol - allocate page fragments, we can end-up re-using already allocated memory for mptcp_data_frag. Fix the issue ensuring that the to-be-expanded data fragment is located at the current page frag end. v1 -> v2: - added missing fixes tag (Mat)

Rincian

Terbit di NVD

25 Maret 2024

Terakhir diubah

4 Agustus 2026

Status NVD

Modified

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-787: Out-of-bounds Write

EPSS (30 hari)

0,24% peluang dieksploitasi; lebih tinggi dari 14,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8 patch
• https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154 patch
• https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34 patch