CVE-2021-3782

Katalog CVE

CVSS 6.6 · Medium EPSS 0,32%

Kerentanan Integer Overflow or Wraparound pada wayland. Skor CVSS 3.1 6.6 (Medium) menurut NVD.

Deskripsi (NVD)

An internal reference count is held on the buffer pool, incremented every time a new buffer is created from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the server to create a large number of external references to the buffer storage. With the reference count overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of server-side memory to the attacking client at a time.

Rincian

Terbit di NVD

23 September 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-190: Integer Overflow or Wraparound

EPSS (30 hari)

0,32% peluang dieksploitasi; lebih tinggi dari 22,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://gitlab.freedesktop.org/wayland/wayland/-/issues/224 exploit · issue tracking · patch · advisory pihak ketiga