CVE-2021-47024: linux kernel

csirt@kutim:~/threat-intel/cve/CVE-2021-47024

CVSS 5.5 · Medium EPSS 0,25%

Kerentanan Missing Release of Memory after Effective Lifetime pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: free queued packets when closing socket As reported by syzbot [1], there is a memory leak while closing the socket. We partially solved this issue with commit ac03046ece2b ("vsock/virtio: free packets during the socket release"), but we forgot to drain the RX queue when the socket is definitely closed by the scheduled work. To avoid future issues, let's use the new virtio_transport_remove_sock() to drain the RX queue before removing the socket from the af_vsock lists calling vsock_remove_sock(). [1] https://syzkaller.appspot.com/bug?extid=24452624fc4c571eedd9

Rincian

Terbit di NVD: 28 Februari 2024
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-401: Missing Release of Memory after Effective Lifetime
EPSS (30 hari): 0,25% peluang dieksploitasi; lebih tinggi dari 15,0% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
linux	linux kernel	Versi 5.2 hingga sebelum 5.10.37
linux	linux kernel	Versi 5.11 hingga sebelum 5.11.21
linux	linux kernel	Versi 5.12 hingga sebelum 5.12.4

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.