CVE-2021-44733

Katalog CVE

CVSS 7.0 · High EPSS 0,71%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada linux kernel, redhat enterprise linux +10 lainnya. Skor CVSS 3.1 7.0 (High) menurut NVD.

Deskripsi (NVD)

A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object.

Rincian

Terbit di NVD

22 Desember 2021

Terakhir diubah

5 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

EPSS (30 hari)

0,71% peluang dieksploitasi; lebih tinggi dari 52,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c advisory vendor
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dfd0743f1d9ea76931510ed150334d571fb... patch
• https://github.com/pjlantz/optee-qemu/blob/main/README.md exploit · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html mailing list · advisory pihak ketiga
• https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander%40linaro.org/ advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20220114-0003/ advisory pihak ketiga
• https://www.debian.org/security/2022/dsa-5096 advisory pihak ketiga