CVE-2026-31478

Katalog CVE

CVSS 9.8 · Critical EPSS 0,74%

Kerentanan pada linux kernel. Skor CVSS 3.1 9.8 (Critical) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len() After this commit (e2b76ab8b5c9 "ksmbd: add support for read compound"), response buffer management was changed to use dynamic iov array. In the new design, smb2_calc_max_out_buf_len() expects the second argument (hdr2_len) to be the offset of ->Buffer field in the response structure, not a hardcoded magic number. Fix the remaining call sites to use the correct offsetof() value.

Rincian

Terbit di NVD

22 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

EPSS (30 hari)

0,74% peluang dieksploitasi; lebih tinggi dari 53,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0e55f63dd08f09651d39e1b709a91705a8a0ddcb patch
• https://git.kernel.org/stable/c/4cb537ae4f37d7d0f617815ed4bed7173fb50861 patch
• https://git.kernel.org/stable/c/6aef1765d6807e0f027cd87f6ac973eb0879a46d patch
• https://git.kernel.org/stable/c/70b4c414889492c522b6e4331562360f49be2361 patch
• https://git.kernel.org/stable/c/80824c7e527b70cf9039534e60aff592e8f209d1 patch
• https://git.kernel.org/stable/c/9a7166f0ef8cbb7bb48dd05e2471d995566003f5 patch
• https://git.kernel.org/stable/c/c3a89e3ec1ccf64fa6a34e391e1581ebbcba8683 patch