CVE-2026-72492

Katalog CVE

CVSS 8.8 · High EPSS 0,64%

Skor CVSS 3.1 8.8 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in same_client_has_lease() same_client_has_lease() returns an opinfo pointer from ci->m_op_list after dropping ci->m_lock without taking a reference. smb_grant_oplock() then dereferences that pointer in copy_lease() and when checking breaking_cnt. A concurrent close can remove the old lease from ci->m_op_list and drop the last reference before the caller uses the returned pointer, leading to a use-after-free. Take a reference when same_client_has_lease() selects an existing lease, drop any previous match while scanning, and release the returned reference in smb_grant_oplock() after copying the lease state.

Rincian

Terbit di NVD

15 Agustus 2026

Terakhir diubah

17 Agustus 2026

Status NVD

Received

CVSS 3.1

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

EPSS (30 hari)

0,64% peluang dieksploitasi; lebih tinggi dari 49,5% 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/09634cd055d9bd8dd167995ea52bcd8028dd5dac
• https://git.kernel.org/stable/c/0ff82a9cf9312678d8bc4edeef0b6e82659ac12a
• https://git.kernel.org/stable/c/35d3d6ff2bc1e7aaecb15d5377ebbd6227acae0d
• https://git.kernel.org/stable/c/65b655f65c3ca1ab5d598d3832bb0ff531725858
• https://git.kernel.org/stable/c/79c7c59bb519db6f5a2a151965e825ec725614cc
• https://git.kernel.org/stable/c/7c3264d273d524aa6adcce23c01087271f13586f
• https://git.kernel.org/stable/c/aaa3bb2bbf2ccbfea9e4e0b9dabf3afc60b50cd0