CVE-2026-45252

Katalog CVE

CVSS 5.5 · Medium EPSS 0,44%

Kerentanan Heap-based Buffer Overflow pada freebsd. Skor CVSS 3.1 5.5 (Medium) menurut CISA ADP.

Deskripsi (NVD)

When a fusefs file system implements extended attributes, the kernel may send a FUSE_LISTXATTR message to the userspace daemon to retrieve the list of extended attributes for a given file. The FUSE protocol requires the daemon to return a packed list of NUL-terminated strings. The fusefs kernel module calls strlen() on this daemon-supplied buffer without first verifying that the entire list is NUL-terminated. If a malicious daemon sends a non-NUL-terminated list, the fusefs kernel module may read beyond the end of one heap-allocated buffer and potentially write beyond the end of a second buffer. A malicious daemon could disclose up to 253 bytes of kernel heap memory, or it could inject up to 250 attacker-controlled bytes into unallocated kernel heap space.

Rincian

Terbit di NVD

21 Mei 2026

Terakhir diubah

23 Juli 2026

Status NVD

Analyzed

CVSS 3.1

5.5 (Medium), sumber CISA ADP
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow

EPSS (30 hari)

0,44% peluang dieksploitasi; lebih tinggi dari 36,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.freebsd.org/advisories/FreeBSD-SA-26:20.fusefs.asc advisory vendor