CVE-2026-6791

Katalog CVE

CVSS 6.6 · Medium EPSS 0,22%

Kerentanan Stack-based Buffer Overflow. Skor CVSS 4.0 6.6 (Medium) menurut CNA.

Deskripsi (NVD)

When expanding paths that begin with a tilde (~) followed by a username, the internal parse_tilde function extracts the username to determine the user's home directory. The implementation allocates memory for this username directly on the stack using the strndupa macro. Because the size of this allocation was determined by the length of the user-supplied input without any bounds checks, passing an excessively long username e.g. thousands of characters, forces the thread to exhaust its stack space. Thus if an application passes untrusted, attacker-controlled input to the wordexp function, an attacker can trigger a stack clash.

Rincian

Terbit di NVD

10 Agustus 2026

Terakhir diubah

3 September 2026

Status NVD

Awaiting Analysis

CVSS 4.0

6.6 (Medium), sumber CNA
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:L/SA:H/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-121: Stack-based Buffer Overflow

EPSS (30 hari)

0,22% peluang dieksploitasi; lebih tinggi dari 11,5% 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://sourceware.org/bugzilla/show_bug.cgi?id=34091