CVE-2021-47353

Katalog CVE

CVSS 5.5 · Medium EPSS 0,31%

Kerentanan NULL Pointer Dereference pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: udf: Fix NULL pointer dereference in udf_symlink function In function udf_symlink, epos.bh is assigned with the value returned by udf_tgetblk. The function udf_tgetblk is defined in udf/misc.c and returns the value of sb_getblk function that could be NULL. Then, epos.bh is used without any check, causing a possible NULL pointer dereference when sb_getblk fails. This fix adds a check to validate the value of epos.bh.

Rincian

Terbit di NVD

21 Mei 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-476: NULL Pointer Dereference

EPSS (30 hari)

0,31% peluang dieksploitasi; lebih tinggi dari 22,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238 patch
• https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c patch
• https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5 patch
• https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9 patch
• https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6 patch
• https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b patch
• https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02 patch
• https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d patch
• https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43 patch