CVE-2020-25221

Katalog CVE

CVSS 7.8 · High EPSS 0,67%

Kerentanan Operation on a Resource after Expiration or Release pada linux kernel, netapp cloud backup +4 lainnya. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

get_gate_page in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting (caused by gate page mishandling) of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit process that can use ptrace() or process_vm_readv(), aka CID-9fa2dd946743.

Rincian

Terbit di NVD

10 September 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-672: Operation on a Resource after Expiration or Release

EPSS (30 hari)

0,67% peluang dieksploitasi; lebih tinggi dari 50,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.7 release notes · advisory vendor
• https://git.kernel.org/linus/8891adc61dce2a8a41fc0c23262b681c3ec4b73a issue tracking · patch · advisory vendor
• https://git.kernel.org/linus/9fa2dd946743ae6f30dc4830da19147bf100a7f2 issue tracking · patch · advisory vendor
• https://www.openwall.com/lists/oss-security/2020/09/08/4 mailing list · patch · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2020/09/10/4 mailing list · advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20201001-0003/ advisory pihak ketiga