CVSS 7.8 · High EPSS 0,22%
Kerentanan Stack-based Buffer Overflow pada x.org x server, x.org xwayland +1 lainnya. Skor CVSS 3.1 7.8 (High) menurut redhat.com.
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an incomplete fix of CVE-2025-26597. This may be used to crash the server, or for privilege escalation if the X server runs as root.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| x.org | x server | Semua versi sebelum 21.1.23 |
| x.org | xwayland | Semua versi sebelum 24.1.12 |
| redhat | enterprise linux | Versi 7.0 |
| redhat | enterprise linux | Versi 8.0 |
| redhat | enterprise linux | Versi 9.0 |
| redhat | enterprise linux | Versi 10.0 |