CVE-2023-52629: linux kernel

csirt@kutim:~/threat-intel/cve/CVE-2023-52629

CVSS 8.4 · High EPSS 0,25%

Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 8.4 (High) menurut CISA ADP.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug The original code puts flush_work() before timer_shutdown_sync() in switch_drv_remove(). Although we use flush_work() to stop the worker, it could be rescheduled in switch_timer(). As a result, a use-after-free bug can occur. The details are shown below: (cpu 0) | (cpu 1) switch_drv_remove() | flush_work() | ... | switch_timer // timer | schedule_work(&psw->work) timer_shutdown_sync() | ... | switch_work_handler // worker kfree(psw) // free | | psw->state = 0 // use This patch puts timer_shutdown_sync() before flush_work() to mitigate the bugs. As a result, the worker and timer will be stopped safely before the deallocate operations.

Rincian

Terbit di NVD: 29 Maret 2024
Terakhir diubah: 3 Oktober 2026
Status NVD: Modified
CVSS 3.1: 8.4 (High), sumber CISA ADP
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-416: Use After Free
EPSS (30 hari): 0,25% peluang dieksploitasi; lebih tinggi dari 15,6% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
linux	linux kernel	Versi 2.6.20 hingga sebelum 6.5.4

> 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.