csirt@kutim:~/threat-intel/cve/CVE-2021-47577

Katalog CVE

CVSS 4.7 · Medium EPSS 0,15%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada linux kernel. Skor CVSS 3.1 4.7 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: io-wq: check for wq exit after adding new worker task_work We check IO_WQ_BIT_EXIT before attempting to create a new worker, and wq exit cancels pending work if we have any. But it's possible to have a race between the two, where creation checks exit finding it not set, but we're in the process of exiting. The exit side will cancel pending creation task_work, but there's a gap where we add task_work after we've canceled existing creations at exit time. Fix this by checking the EXIT bit post adding the creation task_work. If it's set, run the same cancelation that exit does.

Rincian

Terbit di NVD
19 Juni 2024
Terakhir diubah
4 Agustus 2026
Status NVD
Modified
CVSS 3.1
4.7 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
EPSS (30 hari)
0,15% peluang dieksploitasi; lebih tinggi dari 3,7% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
linux linux kernel Semua versi sebelum 5.15.11
linux linux kernel Versi 5.16 rc1
linux linux kernel Versi 5.16 rc2
linux linux kernel Versi 5.16 rc3
linux linux kernel Versi 5.16 rc4

> 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.