CVE-2026-63867

Katalog CVE

CVSS 8.2 · High EPSS 0,34%

Skor CVSS 3.1 8.2 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: mptcp: close TOCTOU race while computing rcv_wnd The MPTCP output path access locklessly the MPTCP-level ack_seq in multiple times, using possibly different values for the data_ack in the DSS option and to compute the announced rcv wnd for the same packet. Refactor the cote to avoid inconsistencies which may confuse the peer. Also ensure that the MPTCP level rcv wnd is updated only when the egress packet actually contains a DSS ack.

Rincian

Terbit di NVD

19 Juli 2026

Terakhir diubah

27 Juli 2026

Status NVD

Awaiting Analysis

CVSS 3.1

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

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,5% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/301a33fd590c408a05c5df800e0cc1e6a8a2f8f8
• https://git.kernel.org/stable/c/3b8cbba7c0ed31189c89f90be247b8973ffa79ef
• https://git.kernel.org/stable/c/68364963e5baf03f16b4420292291f75c8f66497
• https://git.kernel.org/stable/c/8ab24fdebc369c0dfb90f82c1650b1e66662bb45
• https://git.kernel.org/stable/c/8f4f0a157e8436a05bf8c3670b24dbc258911c43
• https://git.kernel.org/stable/c/907ac6b1658e0277f979fcdfae2a753b495c1510
• https://git.kernel.org/stable/c/c4f4cf60797974873dbc8e100144682a6f2f861f