CVE-2021-47235

Katalog CVE

CVSS 7.8 · High EPSS 0,23%

Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: fix potential use-after-free in ec_bhf_remove static void ec_bhf_remove(struct pci_dev *dev) { ... struct ec_bhf_priv *priv = netdev_priv(net_dev); unregister_netdev(net_dev); free_netdev(net_dev); pci_iounmap(dev, priv->dma_io); pci_iounmap(dev, priv->io); ... } priv is netdev private data, but it is used after free_netdev(). It can cause use-after-free when accessing priv pointer. So, fix it by moving free_netdev() after pci_iounmap() calls.

Rincian

Terbit di NVD

21 Mei 2024

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

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-416: Use After Free

EPSS (30 hari)

0,23% peluang dieksploitasi; lebih tinggi dari 12,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0260916843cc74f3906acf8b6f256693e01530a2 patch
• https://git.kernel.org/stable/c/19f88ca68ccf8771276a606765239b167654f84a patch
• https://git.kernel.org/stable/c/1cafc540b7bf1b6a5a77dc000205fe337ef6eba6 patch
• https://git.kernel.org/stable/c/95deeb29d831e2fae608439e243e7a520611e7ea patch
• https://git.kernel.org/stable/c/9cca0c2d70149160407bda9a9446ce0c29b6e6c6 patch
• https://git.kernel.org/stable/c/b1ad283755095a4b9d1431aeb357d7df1a33d3bb patch
• https://git.kernel.org/stable/c/d11d79e52ba080ee567cb7d7eb42a5ade60a8130 patch
• https://git.kernel.org/stable/c/db2bc3cfd2bc01621014d4f17cdfc74611f339c8 patch